I cannot write to my friend, nor join his game! if I try, my game acts as if I have been disconnected, nothing works! If I'm in an own game while trying to join my friend's, I all of a sudden can't use the waypoint, I can't enter dungueons or use teleport. This problem started yesterday and it's pretty boring not being able to play together on a saturday-sunday.
I know some people have been posting about this, but I haven't seen any answers. Please inform me if there's anything new I should know about concerning this issue (are blizz working on it? can I fix it myself somehow? This happens to a lot of people? etc etc)