I suspect there's some difficulty receiving blocks if all the nodes you're connected to are 0.3.9 or lower. We need enough of us so that at least one node you connect to will be 0.3.10. The problem will start to go away when we make up more than 1/8th of the network.
It'll help if you port forward so you can get lots of connections.
BitcoinTalk
#4From:
satoshi
Subject:
Re: 0.3.10.1 Question on where block should be
Date: