FacebookIM – Facebook Chat For Windows Mobile.

Changes:

* improved User Interface
* better fit for QVGA (smaller images)
* automatic thumbnails cache cleaner
* facebook new notifications indicator
* unread inbox messages indicator
* fixed random messages not arriving
* fixed freezing problem upon connecting
* added facebook phonebook link (on the Web Menu)
* added full status and status time on chat window
* improved touch scroll

http://forum.xda-developers.com/showthread.php?t=480365