My wife's beloved THR22 had been experiencing some odd guide issues, with season passes not picking up shows that were in the guide (and not excluded because of first-run, etc.) So I figured it would be reasonable to do the "Clear Guide Data", which said it would reload all the guide data from the satellite and rebuild the ToDo list. Well, it did more than that - it deleted all but four (?!) of the 20+ season passes and deleted all the wishlists. None of the remaining SPs had their ToDos repopulated. My wife is not a happy camper right now. Many of her Season Passes we had duplicated on the HR44 we also have, but not all. At least it didn't delete the recordings!