I tried that early on a few times - it corrected some wierd issues but did nothing for the missing DVR tiles. Also, several others have said that any sort of re-boot would interrupt any download(s) and they would have to start again. Sound reasonable?Just for Jeepers, try this. Make sure all of your equipment is in standby. Now, unplug the Hopper for 30 seconds. Now, plug it back in and let it go through its cycle. What do you see now?