Dlink router UpNp won't work

I'm posting this here because there might be something in Vista preventing
UPNP from working for me. I'm not sure.

I've got a Dlink DGL-4300 with UPNP on and programs on my pc won't work with
UPNP. I don't get it. I've got utorrent set up for upnp and the router has
upnp enabled. It still won't work. I don't get it at all. I'm forced to
manually do port forwarding when upnp should be working.

Vista firewall is actually off so that isn't causing it to block.

Any ideas?