I've been trying to use Pidgin / Gwibber / Empathy or any other chat client in my Ubuntu 12.10 but everytime I add an account I get a network error. Pidgin displays the verbose error "Lost connection to server. Connection reset by peer". I've tried pretty much all the standard instructions there are to add an account properly and have spent hours reading up forum posts and solutions and trying the same, but found nothing yet that works for me.
I use internet via a proxy server set up in the Ubuntu system settings and have each time selected "use system proxy settings" while setting up the chat client.
I've tried every other chat client out there in vain and I'd be grateful is someone could help me out of this fix.