Still not having much luck solomining. I've got a spare antminer that I've been trying to solomine goat with, however I just can't get it running. It just refuses to connect.
To troubleshoot solomining, I always like to use netstat to see whether the coin client is listening to the correct ports, and something like netcat to verify that it is not blocked by a firewall or such. Also, verifying the rpcuser & rpcpassword can't hurt. (Which OS are you on?)
If that doesn't solve it though - did you try my other P2Pool node yet

? I set it up shortly after the first one seemed to be dying. They're actually both working reasonably well now, though the second has a better valid shares rate. It's 'still' at
http://goatcoin.p2p.0x0a.nl:22646 (IP changed, so same address, different node). EasyBTC also set up a P2Pool node which seems to be even better,
but I'm not sure whether he's ready for the public yet at
http://easyclient.dnsd.me:22646 .