Gonna bump this to see if there is any response. I have finally had chance to have a bit of a dig about.

Both my N810 and N800 have stopped connecting to MSN with a network error message. My N800 largely sits there unused nowadays so I don't think it's a problem on a tablet.

I have checked my account using empathy on a recently installed ubuntu laptop, and it connects straightaway, so it is not my account, or me not remembering the correct username or password!

I have had a poke inside Qole's hacked libpurple deb, and the certificates look to be correct.

I'll try and copy the certs across to see if they help.

Has anyone else had this, and managed to get it going again??