I've browsed a few topics now that complain about UPnP problems on the latest 1.9 firmware. I had 1.6 for the longest time (I don't even see anything in between on the FTP site) and that worked great with my Windows Home Sever. Now WHS can no longer deal with the UPnP on this DGL-4300 right after I patched to 1.9.
This is a real problem. Any word on when these issues will be fixed?