My SD DVR40 keeps randomly rebooting itself with no other issues. There is no pixelation, weird sounds, etc. It works perfectly other than the random reboots. Is there any way to fix this or is a new unit needed? I haven't been on this forum lately and after reading a few messages I realize this is a widespread problem (D** must want all Tivo units replaced by their units, because I called them and they offered to replace my unit with one of theirs for $19.99 shipping cost)....I also didn't realize I had a software update to 6.3e, which is most likely causing the problem.....strange that my other two units work fine though. Is there any way to go back to a previous software version? I have an unhacked basic unit. Thanks!