It's a 24hr average.. 8 hours ago, when I noticed the update, it was stuck at 10%.. It's creeping up slowly, and coins mined is up some 50% since this morning..
Give it another 16 hours, and then see where we are.. I think we're doing a lot better than it looks..

A quick look through the block history suggests the pool has solved 21 out of the 73 blocks since 25900..