I have the Curve 8300 and am on the ATT Network. I am on the BIS data plan. I downloaded Gchat and it loaded just fine and let me sign in.

I also downloaded Yahoo Messenger just fine but once I tried to sign in, the screen prompts "Service not enabled for this device" Whats the deal??

I have Y! Beta 3.0 and that works fine so its not an issue of my passwords not working. Any ideas??