VLC showing diagonal lines playing mpg

[Colin Law]

Hi

I have two PCs running Ubuntu 9.10 with VLC 1.0.2 from the repository.
 When I play mpg files (which happen to be captured from a Hauppauge
pvr-150 card recording from a video recorder, but I do not know
whether this is significant) one of the PCs is fine but the other has
faint diagonal coloured lines across it and a green stripe across the
bottom.  Can anyone suggest what the problem may be?

Colin