On a long haul trip from Moscow to San Fran - over northern Canada, my plane suddenly has a problem! (not looking for a solution, just thought is was an interesting artifact - probably some type of memory leak):

I get this quite often (FS X). I remember very clearly that around here a solution was posted, but I just switch to windowed mode (then back to full screen) and the 3D engine gets re-initialized and everything's fine again.

I get the same quite often, i think its a combination of FSX and ATI graphics card.Do you have ATI or Nvidia card?

I for one have NVidia 8800, Windows7 x64.