The ongoing DDoS had shifted gears and they're attacking database intense functions of the stats from thousands of IPs making it hard to filter.
Its causing *stats side* database replication lag, which is playing havoc with random hashrate calcs.
Pool side (ie: the important stuff like earnings) are not affected.
The attackers goal seems to be to stir up confusion. Judging by these posts its unfortunately working. :-/
Thanks for the update. Do you have any idea how much assets you would need to get a better protection? If I or we all had a better idea, I'd go for a crowd-funding-round.