Hi - and welcome to the forums...

I'd appreciate some more info in being able to diagnose your problem. From the sound of it, it's only DVDs which are affected...

What preset did you use? If you use a lower preset does the lag improve? What about if you play it on Media Player rather than mplayer?

I don't have an OS2007 device anymore, so am reliant on testing reports about the presets. The presets that are there now seem to work well with both Media Player and mplayer on OS2008, but YMMV.

Sorry for the inconvenience, though.

Cheers,

Andrew