graphics display problem

Hi there,i have a problem with my fs2004. When i approach an airport, it looks fine. All of the sudden (when i am close enough), the textures get extremely colorful:Look at this, please: http://www.bodovanlaak.de/pics/Vergleich.jpgThe right part of the pic is ok, the left part was photographed ca. 1m further in flight direction... :-(But this is no mipmapping effect. An it happens also with (at least) most ai planes, and with addon scenery building and autogen. You can even switch this both color tones by slewing forward and backward.Can you help? I tried all graphic driver options (gforce 8800GTS) and also all fs9-Settings with no luck.