it's normal, that the hashrate in p2pool(not in cgminer) is dancer?
Sure. If your miners dont submit shares to pool - it decreases your hashrate. Just ignore it if only it doesn't drop significantly.
ok, tnx
another problem here
p2pool 3.1 keep asking me about getting new bitcoin version , greater than 0.5, but i own already the 0.8.1, why this error?