I've had my openbox s9 for a few weeks and love it so far. I got around to hooking up a external hard drive via usb to the unit to try the pvr function of it and I can record and playback with it, but sometimes the openbox locks up only when doing pvr functions. The openbox never locks up just watching programs, mostly in the record manager it locks. The only way I can get it going is to shut off master power on back of openbox. Is this a known issue, is there some external harddrives that work better than others? I can't spend enough time with my new toy. Drives my wife crazy. Thanks, Chad