Should be fixed now.
It seems not:
2013-11-17 19:17:44: Listener for "Multipool.us-MP2": [2013-11-17 19:16:43] Probing for an alive pool
2013-11-17 19:17:44: Listener for "Multipool.us-MP2": [2013-11-17 19:17:43] No servers were found that could be used to get work from.
2013-11-17 19:17:44: Listener for "Multipool.us-MP2": [2013-11-17 19:17:43] Please check the details from the list below of the servers you have input
2013-11-17 19:17:44: Listener for "Multipool.us-MP2": [2013-11-17 19:17:43] Most likely you have input the wrong URL, forgotten to add a port, or have not set up workers
2013-11-17 19:17:44: Listener for "Multipool.us-MP2": [2013-11-17 19:17:43] Pool: 0 URL: stratum+tcp://pool1.us.multipool.us:7777 User:
2013-11-17 19:17:44: Listener for "Multipool.us-MP2": [2013-11-17 19:17:43] No servers could be used! Exiting.
We're still under DOS attack on the mining ports. I will be implementing a more permanent fix for this tonight.