jabber list on ichat is having issues.

i just wanted to see if anyone else who also has their facebook chat set up with ichat was having the same problem. as i am talking to someone, right after the send what they were writing, it says they go offline, even though they're still online and i can still send them messages. this gets really irritating when trying to talk to someone. i know that facebook and jabber are updating the chat service soon by making it better and removing IE6 compatibility. could it just be that? any help or comments would be appreciated.