Well, I updated the client and now P2Pool won't connect to the P2P port of the client.
Here is a getinfo:
"version" : 1080500,
"protocolversion" : 69001,
"walletversion" : 60000,
"balance" : 0.00000000,
"blocks" : 465529,
"connections" : 8,
"proxy" : "",
"difficulty" : 0.67566732,
"testnet" : false,
"keypoololdest" : 1386006463,
"keypoolsize" : 101,
"paytxfee" : 0.00000000,
"mininput" : 0.00010000,
"errors" : ""
This what I get with P2Pool:
2013-12-05 14:27:08.064123 Testing bitcoind RPC connection to '
http://127.0.0.1:20772/' with username 'giggity'...
2013-12-05 14:27:08.086477 ...success!
2013-12-05 14:27:08.086569 Current block hash: 1502af2d20606976e82e5070b87cbd36bf3680913f1461391cbe4703a031c626
2013-12-05 14:27:08.086621 Current block height: 465532
2013-12-05 14:27:08.086661
2013-12-05 14:27:08.086747 Testing bitcoind P2P connection to '127.0.0.1:20770'...
And that's where it sits.