I've been trying everything to solve this problem:
Facebook chat connects like a charm over xmpp, and receives messages, but any of my contacts can't receive any message from me.
I can use pidgin with Google Talk and Msn messenger and works properly.
Bonus question: Trying to change im client, I tried Empathy and I have the same problem, but not only with Facebook but also with the other ones.
Here's my system info:
Any hint or thought will be really appreciated