I'm using an Asus p3v4x, which is the same VIA chipset as yours, and I've not seen any lockup when in PVR mode. I'm using via 4n1 version 28. Can you explain exactly, step by step, how you get yours to lock up? Or does it just lockup for no reason?
Much of our effort did not solve the PVR lockups. I will email AccessDTV and see if they have come up with something. At the current version, the only meaningful PVR function is Pause, which works fine.
I hope a fix comes out soon since I can not use my AccessDTV to its potential. I'd like to see time slider added, and more hotkeys available to full screen such as skip forward in user selected intervals.