We have a long list of blocks in the "Strange Blocks" list on blockchain: https://blockchain.info/strange-transactions.  That list goes back to late May, and a cursory glance suggests every one of p2pool's blocks appears there.

It looks like one of us isn't getting paid 

Since this is always at the bottom of each transaction list:


Does that mean 1Kz5Q is the one not getting paid?  Are those coins redistributed among the miners (I'm not sure they could be), or just lost?

Should we worry about this at all?