The native BlackBerry IM clients (Gtalk, AIM, Yahoo!, MSN and ICQ) have been updated from version 2.5.27 to 2.5.30. There is no changelog available. There is nothing different on the outside. The download size via the mobile.blackberry.com site is smaller, 862 KB, versus the 2.2 MB download size via BB App World, for Yahoo! Messenger. Why? Live Messenger is 784.7 KB Google Talk is 629.4 KB.