Interesting lip-sync observation

[MaBo]

Hi,
As several other users of the pvr350, using the tv-out, I have experienced quite some lip-sync issues in particular while watching a program that is being recorded. On the (Dutch) hauppauge forum it was suggested to check bios and ide-drivers. Thus I did. Just installed an update of the udma driver for my pundit (well in fact installed the one that came on the cd). This appears to have improved the situation. But, and now comes the interesting bit:
When I pause a file that is recorded and resume with the pause key, lip sync is poor. However, if I resume with the play key, lip sync is OK. I tested it several times and it appears to be this way 9 out of 10 times. If lip sync is poor due to resuming with the pause key, pressing play will restore sync in most cases!!

Sub, is there an explanation for my observation?

Greetz,
MaBo

Loosely related is the fact that I still think it's non-ergonomical that to resume a paused video, both the pause and play key work, whereas for paused music file, only the play key works.

[sub]

No, that doesnt make sense. I've checked and they both do exactly the same thing.