Is anyone seeing this? or is this just normal variance?
Yes, I also meet the similar condition (look at the previous page). The client 13.4 does not function properly and nobody here tempts to explain why. Do not use it.
Ok, I rolled back to my previous versions of p2pool and litecoin wallet.
Interestingly enough, I decided to do a wallet backup before the rollback. Before I had a chance to backup, Litecoin wallet had crashed. When I restarted, the wallet was ~26 hours out of sync. When it resync'd, I only had mining payouts from my smaller pre-upgrade pool. No rewards from the upgraded pool.
Before all of this, I was getting from 4-10 mining payouts per day on my larger pool.
Something appears hinky with the new versions of Litecoin and p2pool.