I've recently a) installed CFW 2.20 and b) installed a new HDD (same as originally fitted) to my Hummy. Since, I've had 3 freezes when looking through the list of recordings in the "media" folders. Bt freezing I mean the box fails to respond to the remote. Fixed each time by a hard reboot of the box, so not AFAIK a problem with the remote (ie failing batteries). One freeze was during a recording, which was unaffected (until I did the reboot of course, when it stopped and I manually restarted it). I feel this may be realted to the custom firmware - so, what do I need to to remove it, if thats what I decide to do please?