Just bought a D-Link DI-634M and I am also having problems. connected up and rebooted as per Quick Start instructions, all status lights appear OK, although I noticed the wireless LAN light was not steady, it was a constant on/off orange, not a fast blinking. Powered up the PC and opened IE and it opened on the Ntl provisioning page. Was this my first mistake, instead of proceeding with the Ntl provisioning I entered the url instructed in the Quick Start guide and everything seemed to progress normally. Zone alarm Pro popped up a 'New Network' warning which I allowed trusted access to. however I cannot now connect to the internet. I tried to reboot the PC and it was still trying to reboot after 20 minutes, it appears that ZA Pro was trying to initialise. I could not shut down the PC and had to use the reset button, or turn off at the mains. I have for now, unplugged the router and rebooted STB & PC and it is working fine again. I did try to go through the whole routine again to see if I could get to the Ntl provisioning page but the PC would not boot correctly. I tried to check the IP that DCHP had assigned with the router connected, it ended in .0.100, although it reported that the Lan connection was working OK. Not sure if that means anything.
Any suggestions.