Getting weird stuff with the P2Pool again. Difficulty keeps changing, and the pool keeps requesting a work restart because of it. X_x
I'm looking over the logs, and I'm seeing is bubble of stales when the hashrate jumped to 1.5-2 M. One of the things I don't like about p2pool is a miners stales seems to affect everyone. I've noticed this behavior before. I'd suggest connecting in again and see how your connection affects the stale rate, or maybe wedge's instance might be a better fit for your miners. At the end of the day, most of the times the stales jump is from either a misconfigured miner connecting in, or a miner that for some reason is getting high latency from the p2pool instance.
The other causes have been:
-a couple of times the pool has been under DoS and DDoS attacks
-wedge and I are trying to get our pools talking( lol, probably my p2pools fault)
-my ISP decides to fuck with its system.
Another reason may be that we are getting flash mined again. Although the effects are much less dramatic than before, it does cause some fluctuations in the difficulty.