I sent the following text via email to my contact at Aiptek:
Is the problem with the PVR unique to the PVR, or did you find in your testing that other models suffered from it to the same extent too? I am just trying to get a little perspective on this.
and his response was:
The model MPVR does not seem to have the same problem.
So It would seem to confirm that the PVR does have a real problem that Taiwan are in no hurry to address at the moment.