It happens to me sometimes with rigs on the same network. It will say "... interrupted" and never reconnect but other miners are fine and never disconnected in the first place so the pool isn't the issue. Sometimes it reconnects but lately it hasn't.
Good summary of what I'm experiencing. I'd only add that two win7 rigs on the same hub as a linux rig, the win7s puke often. The linux rig is a rock.