I have two pc's, my older one a P4 2.4B with a 9700 Pro and the newer one a P4 3.2C with the 9800 pro. Well when i got my old pc the games ran fine but after a while i noticed after playing games for a while caused these black shadow type things (excuse my descriptive skills) appearing... anyways i forgot about these things, until i got my new pc, installed Doom3 and these things start appearing after 20 mins of gameplay... its gettin reallly annoying! does anyone else have similar problems or a solution? Here is a screenshot i took of the black things