I called the ReplayTV tech support line and told them the problem. The tech support person did not seem particularly "techy" to tell you the truth, but she assured me that if the machine was restarting, it had to be a bad hard drive.
I kept asking her if refreshing the partition or setting back to factory defaults might do something. She reluctantly said I might try that but kept repeating that a new HD would solve the problem.
Apparently, that is a little over $125 and about 5-week wait for that to be returned. Geez!
I thought I'd poke around in the 2-4-3 zones menus to see if I could do anything with that before I sent it in.
The refresh partition told me that it didn't need to be refreshed, but the Clear Channel Guide did just that.
I went to Net Connect after that and IT WORKED!!!!
Ha! I got the feeling that tech support person was just giving the easiest answer she could without thinking. (Probably about to take a coffee break)
Anyway, don't send in your HD before you try to reset to factory defaults or go through all the menus and try different things. Your HD might just be fine.
Back to my beloved ReplayTV!!!!