FSAA problem, pls help!

[TheJedi]

I attached an image of what I get when switching on FSAA on my GeForce 4 Ti 4200.

I had to put some black space at the border to make it more visable. Ingame those lines are close to white.

 

This made me switch between AA and no AA depending on flying at day or at night,

as it's not that noticable when flying daytime-missions.

 

Any ideas what causes this and how to get rid of that strange error else than switching off AA?

 

 

I'm running Win XP Pro and LOMAC 1.02.

Resolution set to 1280x1024.

Problem is independent of using 16 or 32 bit colors.

 

PS:

 

The lines only appear in areas where plain sky (= no clouds, terrain or objects) is visible and only at the upper and left edges of the screens.

Edited March 9, 2005 by TheJedi