Tonight, between the hours of 10 and 11 EST the R-15 reset itself. There was no power failure or any other reason that I can think of but around 11 I tried to look at the guide and found it blank. After about an hour it started to regenerate itself. The other strange thing is the action of the dash (-) as a way to delete programs in the list. At times it has to be double clicked and at other times one click will do it. All other functions seem to work fine. Any ideas???