libpurple
- Improve sleep behavior by aggregation of longer timeouts on second boundaries to allow better power saving. (Arunan Balasubramaniam)
- Fix various crashes on exit.
- Make XML parsing more resilient to interactions with other libraries. This, along with the fix for libxml2 bug 564217, fixes the crashes on connect in XMPP with recent gst-plugins-bad (see #8830 for details).
- Many security related fixes

IRC
- Correctly handle WHOIS for users who are joined to a large number of channels.
- Notify the user if a /nick command fails, rather than trying fallback nicks.

MSN
- Fix a race condition causing occasional Pidgin crashes.
- Fix some errors about the friendly name changing too fast caused by MSN/Yahoo integration buddies.

XMPP
- Less likely to pop up a new conversation window in disregard of the “Hide new IM conversations” preference.

Yahoo
- Fix a crash when sending very long messages.
- Fix a bug where UTF-8 status messages get garbled when going idle.

NEW: option (Program Settings, Misc) to show cursor position 1-based
NEW: telnet option for SOCKS4 proxy (via Telnet ‘Configure…’ button)
NEW: SSH option for SOCKS4 proxy (via SSH ‘Configure…’ button)
NEW: layout option (session profile) to render fonts with antialising
NEW: now supports folders and subfolders within host directory sections
NEW: REXX command ZocFilename(“GETVOLUMELABEL”, …)
NEW: REXX ZocUpload command now supports multiple files
NEW: option to draw cursor in user defined color
NEW: first attempt to support extended colors on TN3270
BETA: VERS 6.09 (internal only)
FIX: cursor style restore failed for htop and mc under Linux
FIX: possible crash when using File, New Window
FIX: possible crash when starting
FIX: quirk with lognames and ^+ placeholder (use session name for log name)
FIX: better error messages for some SSH connection problems
FIX: wrong background color in ‘Configure…’ dialogs (OS X Leopard only)
FIX: cursor style changed after cursor store/restore operation
FIX: TN3270 minor screen redraw glitches
FIX: possible crash when pasting large chunks from the clipboard
FIX: could not login if an SSH password contained a double quote character
FIX: error in host directory when doing ‘mark due’ in folder
FIX: moving an entry to the last folder of a host directory section failed
FIX: possible crash when leaving scrollback while find dialog was open
FIX: problem with 3270/5250 misaligned fields on screen
FIX: problem with 3270/5250 not unlocking the keyboard on receiving screens
FIX: crash when loading version (version 608d Windows only)
CHG: host directory file format changed (internal)
FIX: possible crash when loading bad options files
FIX: quirks with Xterm emulation and meta key in MC (Alt+Tab, Alt+Enter)
FIX: unexpected condition error when using EREXX.DLL (Windows only)
FIX: using REXX ZocGetScreen after a ZocWait sometimes returned nothing
FIX: possible crash when remote host sets window title to a very long string
CHG: internal storage of host directory changed for less memory consumption
FIX: problem initiating a scrollback through tracking the scrollbar (OS X only)
FIX: paging through scrollback via scrollbar skipped two pages (OS X only)
FIX: lines which wrapped around the end now not broken when put to clipboard
FIX: host directory call stats were wrong (Mac OS X PPC only)
FIX: possible crash on startup running on machine with long computer name

Matroska files are now taggable even if they don’t contain decodable audio tracks.
Worked-around “Open Containing Folder” command opening two windows on certain machines.
Added support for Multimedia Class Scheduler Service on Windows Vista and newer.
Various changes to make specific obscure crashes easier to analyze.
Updated third-party component blacklist.
Improved drag&drop compatibility with Windows 7.

- Added file exclusion feature.
- Added detection of Solid State Drives.
- Added “Include non-fragmented files” checkbox to file search.
- Improved interactivity of search.
- Fixed problem that could allow df.exe and Defraggler.exe to run at the same time.
- Fixed rare crash while reanalyzing.
- Minor GUI text changes.
- Minor bug fixes.

- Fixed an ArgumentOutOfRangeException
- Fixed an SEHException
- Fixed wrong burning speed when burning multiple copies
- Prevent startup of CDBurnerXP and show an appropriate error message if system fonts are missing or corrupted
- Fixed a NullReferenceException
- File dates were not always updated correctly
- & character in the default disc label text box underscores the next character typed in the preview area
- Fixed: Cannot leave burning dialog if multiple copies have been canceled
- Fixed not using the saved option for “verify” when using the simple burning options
- !Tmporary files weren’t being cleaned up properly
- Pevent duplicate entries in the message log

- Added support for Firefox 3.5 beta.
- Fixed IE8 cookies deletion after reboot.