The link howard means to give you is actually suprnova.org
Since you're behind a router, you may want to dig out your manual and look through the settings. On my linksys router, you can log into the router itself and use port forwarding and DMZ to help out with BT. If you are familiar with this, its a good idea to forward ports 10000 - 50000 and/or DMZ your computer. This does however leave you more vulnerable to virus attacks.
Otherwise, as was stated, the tracker may just be dead.