TCQ1

I recently purchased a (Nov 3rd) MZ-NH900 to replace my ageing MZ-E62 (still working strong :ohmy: ). I've been very pleased with my purchase, however the sound occasionally disappears for 3-9 secs, yet the unit's display shows the song is still playing (i.e. the time is still increasing). So far I've only noticed this whilst walking or commuting. (Its main use) I've tried various recordings/albums (all @ "standard" compression rate). Immediately after the "sound drop-outs" I've tried rewinding to the point where the sound stopped and then re-playing it. Each time it has managed to play the previously silent segment. The instructions mention G-Protection (Antishock?) surely this would prevent loss of sound from vibrations? Having just spent the best part of £200 on a "portable" music player I'd like to use it out and about. I've replaced the standard headphones with some Sony MDR-E29V, so I doubt it's a loose connection between the remote and phones, but I'm open to suggestions. I'm considering replacing the unit or simply moving on to a dif. model or maybe even a NHD3. Any ideas or similar experiences would be welcome. TCQ1