Having the same problem, though I can't get it to connect even once. I just started researching the problem tonight - no solution yet...
I'm on Windows 7 Pro 64-bit, Production Premium CS 5.5.
I've got no other internet issues, Adobe update works fine.
Please - Anybody have an idea how to troubleshoot this problem?
After several attempts all day,(getting the "unable to connect" error) I was suddenly able to get 6 devices to download. So I still think it is because Adobe's library server is overwhelmed at the times when I'm trying to connect, and patience & persistence is required. I do hope Adobe is listening.