Cannot connect to facebook chat

[Mark Doliner]

This almost looks like a network/firewall/router/content filtering
problem of some sort. Are you able to connect to other XMPP servers?
Is it possible some corporate or school firewall is blocking outgoing
connections to port 5222? Or maybe a local software firewall is
blocking it?

FYI my Facebook account is currently hanging while connecting. It's
possible our problems are related and Facebook's XMPP servers are
having problems.