Dan - it has the same effect on any DVD I try - from proper shop bought films like "Day After Tomorrow" and that "iRobot" to ripped/copied ones (and thats anything from the above type films to filthy whore porn )

I think I have a Dell supplied install disc for the Cyberlink PowerDVD downstairs so I am gonna try that next

I did forget to mention tho - the version of WMP I am using is the boggo XP jobbie -as it's simpler than version 9 or 10 so I haven't bothered upgrading it (seems to run in the backround easier I have been told) Tho it's odd that I could watch DVD's using WinDVD on my old shitty PC (but not with WMP version 9) but can't do it on this one...