i think many people have the same problem,
try to reconnect 10 times or so, and probably it will be ok,
i think we all have to wait for the new patch.
besides i don't have any problems running the game,
1. Be sure your Internet connection is good.
2. IF you are downloading something with torrent turn it off
3. the game runs fine with a clean Windows XP & Windows 7 32bit.
4. Try running the game in Windows mode instead of Full screen.
maybe this will help if not than we
must wait for the new patch, and hope for the best.