Looks like timetravel algo is acting up. I'm getting extremely low accepted hashrate (~7MH/s vs ~45MH/s reported by miner), and pool stats seem pretty off as well - as of right now, it reports 260 miners and 2GH/s hashrate. That seems absurdly low when even a single high-end card should provide 30-40MH/s.

EDIT: Looks like it was fixed shortly after I posted this