just a reminder,
50BTC and BTCguild are both under DDOS attack.
I was checking why my miner doesn't work. I though it was the hardware. Now it seems that it is the pools that are not able to respond.
Sit tight and wait.
use p2pool - that's better

Slush
50BTC
BTC Guild
GHash.io
All DDoS'd at the same time.
Someone is really anxious to get his ROI.