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Update release notes for releases 9.0.4, 8.4.8, 8.3.15, and 8.2.21.
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‎doc/src/sgml/release-8.2.sgml

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<!-- doc/src/sgml/release-8.2.sgml -->
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<!-- See header comment in release.sgml about typical markup -->
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<sect1 id="release-8-2-21">
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<title>Release 8.2.21</title>
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<note>
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<title>Release Date</title>
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<simpara>2011-04-18</simpara>
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</note>
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<para>
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This release contains a variety of fixes from 8.2.20.
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For information about new features in the 8.2 major release, see
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<xref linkend="release-8-2">.
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</para>
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<sect2>
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<title>Migration to Version 8.2.21</title>
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<para>
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A dump/restore is not required for those running 8.2.X.
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However, if you are upgrading from a version earlier than 8.2.14,
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see the release notes for 8.2.14.
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</para>
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</sect2>
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<sect2>
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<title>Changes</title>
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<itemizedlist>
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<listitem>
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<para>
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Avoid potential deadlock during catalog cache initialization
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(Nikhil Sontakke)
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</para>
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<para>
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In some cases the cache loading code would acquire share lock on a
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system index before locking the index's catalog. This could deadlock
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against processes trying to acquire exclusive locks in the other,
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more standard order.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix dangling-pointer problem in <literal>BEFORE ROW UPDATE</> trigger
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handling when there was a concurrent update to the target tuple
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(Tom Lane)
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</para>
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<para>
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This bug has been observed to result in intermittent <quote>cannot
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extract system attribute from virtual tuple</> failures while trying to
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do <literal>UPDATE RETURNING ctid</>. There is a very small probability
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of more serious errors, such as generating incorrect index entries for
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the updated tuple.
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</para>
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</listitem>
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<listitem>
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<para>
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Disallow <command>DROP TABLE</> when there are pending deferred trigger
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events for the table (Tom Lane)
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</para>
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<para>
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Formerly the <command>DROP</> would go through, leading to
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<quote>could not open relation with OID nnn</> errors when the
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triggers were eventually fired.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix PL/Python memory leak involving array slices (Daniel Popowich)
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</para>
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</listitem>
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<listitem>
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<para>
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Fix <application>pg_restore</> to cope with long lines (over 1KB) in
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TOC files (Tom Lane)
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</para>
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</listitem>
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<listitem>
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<para>
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Put in more safeguards against crashing due to division-by-zero
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with overly enthusiastic compiler optimization (Aurelien Jarno)
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</para>
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</listitem>
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<listitem>
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<para>
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Support use of dlopen() in FreeBSD and OpenBSD on MIPS (Tom Lane)
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</para>
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<para>
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There was a hard-wired assumption that this system function was not
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available on MIPS hardware on these systems. Use a compile-time test
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instead, since more recent versions have it.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix compilation failures on HP-UX (Heikki Linnakangas)
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</para>
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</listitem>
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<listitem>
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<para>
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Fix path separator used by <application>pg_regress</> on Cygwin
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(Andrew Dunstan)
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</para>
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</listitem>
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<listitem>
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<para>
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Update time zone data files to <application>tzdata</> release 2011f
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for DST law changes in Chile, Cuba, Falkland Islands, Morocco, Samoa,
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and Turkey; also historical corrections for South Australia, Alaska,
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and Hawaii.
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</para>
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</listitem>
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</itemizedlist>
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</sect2>
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</sect1>
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<sect1 id="release-8-2-20">
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<title>Release 8.2.20</title>
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<note>
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<title>Release date</title>
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<title>Release Date</title>
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<simpara>2011-01-31</simpara>
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</note>
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<title>Release 8.2.19</title>
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<note>
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<title>Release date</title>
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<title>Release Date</title>
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<simpara>2010-12-16</simpara>
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</note>
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<title>Release 8.2.18</title>
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<note>
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<title>Release date</title>
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<title>Release Date</title>
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<simpara>2010-10-04</simpara>
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</note>
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<title>Release 8.2.17</title>
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<note>
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<title>Release date</title>
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<title>Release Date</title>
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<simpara>2010-05-17</simpara>
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</note>
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<title>Release 8.2.16</title>
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<note>
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<title>Release Date</title>
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<simpara>2010-03-15</simpara>
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</note>
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<title>Release 8.2.15</title>
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<note>
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<title>Release Date</title>
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<simpara>2009-12-14</simpara>
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</note>
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<title>Release 8.2.14</title>
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<note>
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<title>Release date</title>
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<title>Release Date</title>
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<simpara>2009-09-09</simpara>
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</note>
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<title>Release 8.2.13</title>
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<note>
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<title>Release date</title>
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<title>Release Date</title>
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<simpara>2009-03-16</simpara>
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</note>
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<title>Release 8.2.12</title>
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<note>
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<title>Release Date</title>
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<simpara>2009-02-02</simpara>
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</note>
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<title>Release 8.2.11</title>
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<note>
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<title>Release Date</title>
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<simpara>2008-11-03</simpara>
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</note>
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<title>Release 8.2.10</title>
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<note>
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<title>Release Date</title>
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<simpara>2008-09-22</simpara>
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</note>
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<title>Release 8.2.9</title>
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<note>
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<title>Release date</title>
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<title>Release Date</title>
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<simpara>2008-06-12</simpara>
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</note>
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<title>Release 8.2.8</title>
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<note>
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<title>Release Date</title>
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<simpara>never released</simpara>
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<title>Release 8.2.7</title>
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<title>Release Date</title>
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<simpara>2008-03-17</simpara>
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<title>Release 8.2.6</title>
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<title>Release Date</title>
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<simpara>2008-01-07</simpara>
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<title>Release 8.2.5</title>
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<note>
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<title>Release Date</title>
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<simpara>2007-09-17</simpara>
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<title>Release 8.2.4</title>
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<title>Release Date</title>
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<simpara>2007-04-23</simpara>
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<title>Release 8.2.3</title>
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<title>Release Date</title>
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<simpara>2007-02-07</simpara>
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<title>Release 8.2.2</title>
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<title>Release Date</title>
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<simpara>2007-02-05</simpara>
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<title>Release 8.2.1</title>
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<title>Release Date</title>
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<simpara>2007-01-08</simpara>
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<title>Release 8.2</title>
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<note>
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<title>Release Date</title>
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<simpara>2006-12-05</simpara>
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</note>
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