My Series 3 has been locking up and rebooting since TiVo Search has been added to my box. For 2 days now it's been freezing up then rebooting about every 30 minutes to an hour. I tried clearing and deleting everything, then it worked fine for about another hour, then rebooted, and I got a message telling me that TiVo Search was available on my box. Since then it has been freezing and rebooting again. Now, my hard drive could have gone bad, but it was working fine on Monday, then TiVo Search became available, and it hs been freezing and rebooting since then. Maybe it's a coincidence that my hard drive went bad at the same time TiVo Search became available?