I've had the same.
Pool web page reported that some ports were closed but I'm unable to load the page now to quote it.

Edit: Still unable to load the web front end but cgminer reporting port 3333 is alive.

Edit: Edit: front end not displaying any stats but I'll quote the message for those that haven't seen it:
"Sorry To those of you who video card Mine on the pool. I know we are one of the last pools that you can still mine for bitcoin with a video card. I had to close the ports due to people connecting asic miners to the video card ports. I am working on a fix and will have it implemented tomorrow."

I guess that any failovers were linked to that.