i get a nat error message if utorrent starts at system startup. i have to restart manually, then it works fine. utorrent 1.4 upnp enabled, no matter what port is set, winxp+sp2 no firewall, dlink di-604 upnp enabled, tried a pc in place of di-604. i think there should be a delay between the start of utorrent and the port open request. sorry for posting this issue here, btw i have this problem since the release of 1.2.