Pidgin

Include the send button plugin in the win32 build
Various memory leak fixes

Version 2.4.2 (05/17/2008)

View all closed tickets for this release.

libpurple
In MySpaceIM, messages from spambots are discarded (Justin Williams)
Strip mIRC formatting codes from quit and part messages.
IRC now displays ban lists in-channel for joined channels.
Fixed a bug where the list of loaded plugins would get removed when switching between different operating systems.
Fix reception of IRC PART without a part message on Undernet (fixes a problem with litter in the channel user list).
IRC no longer crashes on /list on servers which erroneously omit RPL_LISTSTART.
Update the NetworkManager support to use D-Bus directly, instead of libnm-glib. Hopefully it's stable now. It will now compile by default if you have D-Bus support and NetworkManager.h. (Elliott Sales de Andrade)
MSN buddy list synchronization is now more forgiving, only asking about buddies who have disappeared completely from the server list and not those that have simply moved groups.
IRC will now try to append 1-9 to your nick if it is in use, instead of substituting the last character with 1-9 where possible.
Bonjour buddies will be saved persistently if they're moved out of the "Bonjour" group. (Eion Robb)

The typing notification in the conversation history can be disabled or customized (font, color etc.) in .gtkrc-2.0.
Added a plugin (not installed by default) which adds a Send button back to the conversation window. People without physical keyboards have a hard time with the lack of the button.
Clicking on the buddyicon in the conversation window toggles the size of the icon between small and large.
The settings of a chat (e.g. Handle in an XMPP chat, or Exchange in an AIM chat) can be edited from its context menu in the buddy list.
Add a "Present conversation window" preference to the Message Notification plugin; the "Raise conversation window" option does not unminimize windows or draw attention to them when they are on other workspaces--the "Present" option should.
Add a preference to set Escape as the keyboard shortcut for closing the conversation window.
Add an option in the context menu to disable smileys in the selected text in the conversation history/log viewer. This should help people who regularly paste code in conversations.
Add a preference to choose the minimum size of the text input area in lines.
Moved the "Local alias" field in the Modify Account dialog to be below the "User Options" heading on the "Basic" tab.
Number of room occupants is now shown in chat tooltips where possible

Remove a workaround for older versions gstreamer that was causing crashes on some non-Linux systems such as HPUX
Fix some cases of the conversation input entry area being 1 pixel high
Fix for displaying channel & buddy names in conversation window when they have '&' in them
Some memory leak fixes, especially in the Text Replacement plugin
Rectangular but non-square buddy icons have rounded corners in the buddy list

Input text area in conversation windows auto-resizes to fit more lines (up to a maximum of 4 lines)
Added the ability to theme conversation name colors (red and blue) through your GTK+ theme, and exposed those theme settings to the Pidgin GTK+ Theme Control plugin (Dustin Howett)
Fixed having multiple alias edit areas in the infopane (Elliott Sales de Andrade)
Save the conversation "Enable Logging" option per-contact (Moos Heintzen)
Typing notifications are now shown in the conversation area

Fixed a number of MSN bugs introduced in 2.3.0, resolving problems connecting to MSN and random local display name changes
Going idle on MySpaceIM will no longer clear your status and message.
Idle MySpaceIM buddies should now appear online at login.
Fixed crashes in XMPP when discovering a clien

Added a custom conversation font option to preferences
Fixed smiley ordering in the insert smiley popup to be more intuitive
Conversation-More menu items work for Chats as well as Buddies, including those not on your buddy list
newline plugin should work better with conversation colors