Hi all, this is my first post on here, I've been using MC primarily for the audio features but I just bought a Ceton Infiniti pci4 and picked up an M card from Comcast yesterday. I have a similar issue where MC is hanging on tuning tv stations. If I leave it for a period of time while it's on the white screen and spinning blue ring of death, it eventually tunes to the station. A couple things I found when doing initial troubleshooting were that it if Windows Media Center is still installed it seems like WMC services hijacks the Ceton tuners. Even though I ran through scan channels and guide setup successfully in MC, I could not tune Live TV until I uninstalled WMC. Also complicating matters is a Hauppauge 2250 capture card that I use to rip old VHS tapes. I disabled the device in the device manager and the Hauppauge services in the services.msc to eliminate it for now. I haven't been turned it back on yet since I'm having the issue above. Any advice is appreciated! I really love this software, especially the audiophile geek in me!