Stayed with 3.1.1e for fear of the random reboots with 6.2. Got random slo-mo on locals only for the last month. Fixed only by changing channel & back on that tuner. Posted on this board and found some with same issue. Noticed pixelation right before slo-mo. Called advanced tech support at DTV. Thought might be very busy unit (Hughes SD-DVR80, 11 months old, very slooooow) plus some signal from satelite to trigger and suggested C&DE then upgrade. Thought not a software issue since others had had same thing at same moment (Cleveland locals). Did it today. Took 6 hours but results well worth the trouble. I don't know if the slo-mo issue is fixed but the TiVo operation is blazing fast! I'm knocking on wood! Thanx to all who tried to help. Question: Does Clear and Delete Everything defrag the HDD (as tech support said) and help an old unit? Is this something one should do every so often?