A couple of questions:
1. Is your bitcoind fully synched?
2. If you want to try it on a different node to see if it is on the client side, you can try pointing it to mine.p2pool.com (see www.p2pool.com for the full info).
3. Can you post what you are using to run it?  (minus your username and password of course).
4. You have python-twisted python-twisted-web installed?

Those are a few things I'd check first.  ;-)