This bug has been copied from bug #489484 and has been proposed to be backported to 5.3 z-stream (EUS).
*** Bug 491812 has been marked as a duplicate of this bug. ***
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2009-0407.html
Release note added. If any revisions are required, please set the "requires_release_notes" flag to "?" and edit the "Release Notes" field accordingly. All revisions will be proofread by the Engineering Content Services team. New Contents: the ICQ Internet message protocol servers recently changed and now require clients to use a newer version of the ICQ protocol. When logging in to ICQ Pidgin 2.5.2 (the version previously shipped with Red Hat Enterprise Linux 5) fails with an error message as a result. Pidgin 2.5.5, included with this update, uses the newer ICQ protocol, which resolves this issue. Pidgin 2.5.5 also addresses several other minor bugs. Refer to the <ulink type="http" url="http://developer.pidgin.im/wiki/ChangeLog#Version2.5.503012009">Pidgin 2.5.5 ChangeLog</ulink> for details regarding these other changes.