Why on pools eternally any intervals in payments? Part of the schedule certainly it isn't visible, but there was more hash rating and there were intervals till some hours in payments.
In the last 24 hours there was no payment.
I have experienced also problems on p2pool when the difficulty was very high and my own hashrate was low. I think 40kh/s (mean) is too low for p2pool and I would use that GUI pool instead. Although, no problems for me from p2pools after the launch night and I have pretty average hashrate (one older cpu mining..)