After updating my kernel (security update), I noticed little red dots appearing on certain images and whenever I played DVDs.

At first, I thought this was due to my switch over from Ogle to Xine. I switched over because Ogle refused to show the menu on certain DVDs and would just start playing the DVDs. After the kernel update, I couldn't get Ogle to show any video and red dots were appearing on Xine.

I then checked my XVideo drivers. The modules had disappeared! After reinstalling the drivers and restarting the X Server, all was well again.