Log Message:
version 2.4.0 (02/29/2008):
libpurple:
* Added support for offline messages for AIM accounts (thanks to
  Matthew Goldstein)
* Fixed various problems with loss of status messages when going
  or returning from idle on MySpaceIM.
* Eliminated unmaintained Howl backend implementation for the
  Bonjour protocol.  Avahi (or Apple's Bonjour runtime on win32) is
  now required to use Bonjour.
* Partial support for viewing ICQ status notes (Collin from
  ComBOTS GmbH).
* Support for /notice on IRC.
* Support for Yahoo! Messenger 7.0+ file transfer method (Thanumalayan S.)
* Support for retrieving full names and addresses from the address book
  on Yahoo! Japan (Yusuke Odate)
* The AIM/ICQ server-side preference for "allow others to see me
  as idle" is no longer unconditionally set to "yes" even when
  your libpurple preference is "no."
* Fix SSL certificate checks for renewed certificates
* Fix the ability to set vCard buddy icons on Google Talk/XMPP
* D-Bus fixes on 64bit
* Fixed retrieval of buddy icons and setting of server-side aliases on
  Yahoo! and Yahoo! Japan when using an HTTP proxy server (Gideon N.
  Guillen)
* Fixed an MSN bug that would leave you appearing offline when transferred
  to different server