System:
Dell Dimension 2400
Intel Celeron 2.2 ghz
1.128G RAM
PVR-150
Intel8x0 built-in sound card
40G Hard Drive
Knoppmyth R5D1 Mythtv 0.19


My problem is when I play a DVD everythings work fine for a while, but Myth will stop playing the DVD and return back to the Menus. This will also happen if while skiping chapters.

I know that this problem can occur in MythTV 0.20 if you're configured to use the internal player for DVDs rather than xine or mplayer. It might be worth checking the settings screens for optical drives to make sure that you have your "DVDPlayerCommand" set to something like:

xine -pfhq --auto-scan dvd