Seems to be an ongoing discussion in the M10 part three thread.
That, to me, would be a deal-breaker. I've never experienced this issue with my original R09.
I'm wondering if the problem exists when "jumping" off the internal memory and onto an external card; I could see why this might happen. It should be something that must be brought to Sony's attention and I'm guaranteeing that they'll fix that quickly because it's one ugly mother of a glitch/feature.