The problem is out of my hands and all other stats sites are in the same boat as me.I know there was a problem updating, going back to September. But will my account not ever be updated again?
As you can see at http://lhcathome.cern.ch/stats/, the directory is missing the XML stats files that my site and the other stats sites rely on. If you take a look at their main page, you will see that they are in the progress of migrating to a new server.
Also, if you look at their message boards, you will see numerous posts about the lack of stats. See this thread in particular: http://lhcathome.cern.ch/forum_thread.php?id=2276
Therefore, you'll have to keep an eye on their web site for any progress on the issue. Everyday, my site automatically checks for stats from all the projects that I support, so when they're available again in the future, your stats will be updated.
Hope this helps,