In the p2pool log, I'm seeing a ton of these:
2014-04-14 21:10:16.531268 Worker 12uCQa1rEBxQutWUkXE2AA6LnhfrAPJpgF submitted share with hash > target:
2014-04-14 21:10:16.531393 Hash: 93b4405c1ef4a1104a9a26bf30cbce5034847d7a6d5cb6babc8792326ef6b0ce
2014-04-14 21:10:16.531472 Target: ffffffffffffffffffffffffffffffffffffffffffffffffffffffff
I've tried reading through p2pool's source, but Python isn't my thing and the code doesn't appear well structured IMHO. So, it was hard for me to tell if "target" referred to:
a) A Bitcoin block target - unlikely
b) A p2pool share - my first thought
or
c) A difficulty 1 (or x) share - my fear