I don't know if the starting version matters or not but there might be something to the idea of patching existing systems one on top of the other - especially several versions ago, it seems that LOTS of people would have huge new issues after each patch until the complete reformat option started to be recommended. Wiping the drive and starting over with a clean slate seems to help many people who have recurrent problems.
I'm also convinced beyond much doubt that those who have the worst problems, version after version, have marginal hardware: their HR20's have tuners or internal components that are only marginally in-spec, they have mechanical multiswitches that are borderline-glitchy, etc., that all add up to a crappy experience day after day. 'Cause we've had ours since October 21 and have had only a handful of lockups (about one every three weeks) and a few black screen/keep-or-delete recordings over one 24 hour period starting on Thanksgiving day, fixed by a reset. Overall, we'd give our experience a solid B+.
I'm also convinced beyond much doubt that those who have the worst problems, version after version, have marginal hardware: their HR20's have tuners or internal components that are only marginally in-spec, they have mechanical multiswitches that are borderline-glitchy, etc., that all add up to a crappy experience day after day. 'Cause we've had ours since October 21 and have had only a handful of lockups (about one every three weeks) and a few black screen/keep-or-delete recordings over one 24 hour period starting on Thanksgiving day, fixed by a reset. Overall, we'd give our experience a solid B+.