Diagonal Lines - upper left to lower right

On my last Windows install i didn’t get this;

On ALL my openGL rendered games, i often get flshes of a diagonal line going down and to the right at about 75 deggrees, and almost always originate from

The Heads of drawn characters, (MP and SP)
Red Lights ( liek on helipad on mp_shop sof2)
adn sometimes from bottom corners of windows
The flashes aren’t EVERYWHERE, but they’re constant and it’s really bugging the hell out of me.

I’m runngin…
Athlon 800 and a Leadtek Gf2 mx400
28.32 drivers (new ones don’t stop it:< )

i’ve tried with AA on, both 1.41 and 2x