Thanks for the info. My SD Tivo indeed has fewer season passes than my HDTivo. Has anyone figured out what the magic number might be in terms of season passes and the machine having these software problems? The thing is my HDTivo has numerous season passes of shows not currently on (mainly USA, HBO, FX shows that are out of season). If I eliminate those shows, even though I'll have to re-add them when the new season premieres, is that likely to help the problem? Thanks.