Late last night while watching a recording.My tivo shut off and I discovered that it ws doing a installing service update.I am not sure what that means.Does it mean that I got new software because now I have 6.3 where before it was 6.2a.Also after this service update my recording capacity went from 70 hours to now it is 67.Anyone know why this happened ?Do I need to call tivo to have someone come repair it or what should I do.Thanks in advance for the help.