What you are experiencing is a server problem - uncle-enzo has crashed, I believe.
In my experience, the most stable servers currently are ecdsa.org and electrum.novit.ro.
Thanks for the confirmation
There's something wrong with the server not importing transactions while running. I'm currently importing the backlog of transactions that it missed. If you follow the electrum server discussion thread, it isn't just uncle-enzo.info that's having this problem.
OK, thanks for the info. Hope you guys can sort it out quickly.