First off, I'm not sure whether or not this belongs here or in another subforum.

Anyway. I'm experiencing a strange issue in that there are coloured spots appearing on my screen at random places and random moments. I can't take a screenshot of this, since they only pop up for less than a second before disappearing again. They seem to be about a centimetre in diameter.

I'm not sure what is causing this. I recently started noticing it, after I installed the new beta drivers from nVidia. But I clean installed the older WHQL driver, but I'm still seeing the spots.

Anyone else have this issue, or is it just me?