Odd nVidia graphical glitch

[Gouken20xx]

I've been using a nVidia GeForce 8400 GS for my computer for the last few months, but, recently, with some games, most notably Marvel Super Hero Squad and WWE Smackdown, I have two odd glitches, the former exhibiting both.

With some static 3-D screens, a odd 'slicing' effect causes single pixel thickness offsets of the image, and with FMV, the effect is even more pronounced, causing to seem like there are two of three images.
       
Oddly, it is a very limited effect, with 99% of games I've run with my system working as expected without adjustment.
           
System specifications -
Windows 7 Ultimate build 7100
AMD Athlon 64 3200 2.0 GHz
512 MB RAM
nVidia GeForce 8400 GS

[shuffle2]

turn off AF

[Gouken20xx]

(10-31-2009, 01:19 AM)shuffle2 Wrote: turn off AF

How do you do that, and I don't expect you mean turning on the linear filter.
I use the OpenGL plugin, and it goes down to 1x AF but no lower.