Looks like it.
Is this behaviour an artefact of the coin itself or something else?
I don't know, maybe the zero-bounty-blocks confuse the pool software? My p2pool runs without problems so far. I lowered the fee to 0.0 % to offer new users a stable pool to mine on as long as the other pools are this unstable.
I've pointed my miner at your pool, but can't see it listed - does it take a while to show up?
address starts AXRdJ