I have to add that I've been getting the server not responding issue too - though not as bad as it sounds others get it. After playing about 45 minutes I'll get the infinite server not responding when changing maps. It's random and doesn't appear that it matters from which map type or zone I'm transfering from or to. Alt+ctrl+del is the only fix.
I think there's a good sized silent majority of us who are having this problem and just not saying anything.