In reply to:
since it was an intermittent problem, we should continue to test this build for a little longer before declaring the bug swatted.
Ok, so maybe I got a bit carried away 
Since this thread started, and I consciously started listening for the bug I always got a skip well within an hour of playing, so an hour and a half without a skip was some going...
As things stand now, N is still 0, X is now 50, although the tracks playing at the moment are ones I encoded with LAME VBR at a slightly higher rate than the tracks playing earlier. For some non-scientific, gut-feeling reason I was expecting to X to rise with these tracks. The average has actually dropped by 1 to 18.
I'll be leaving the player going overnight so hopefully that will be a better test.
I'm still reasonably convinced it's fixed, or at least pretty well squished, but then I'm in an optimistic mood lately 
Geoff
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Got one of the first Mark 2 empegs...