Scenery Textures Problem

Hello all,
Ever since I upgraded FSX to sp1 and acceleration, I have been having issues with scenery textures, especially during missions. What happens is everything looks normal and then suddenly trees will be suspended in mid air, and some parts of the screen will seperate into solids colors or random suspended water textures. These solid textures completely block out the screen most of the time and then disappear and reappear randomly and continually. This makes FSX virtually unusable as you can't see what attitude you are in or where you are going.
Hopefully some of you will have an idea of what I am talking about as it is very difficult to discribe. I will try to get a screenshot of it next time. Anyway, I was wondering if this could be a graphics card problem. Like I said, FSX was fine until sp1 and acceleration was added. Any suggestions would be greatly appreciated.
ATI Mobility Radeon X1300
T2050 @ 1.6GHz (2CPUs)
Memory 1022MB RAM
DirectX 9.0c
Thanks,
Matt
Ever since I upgraded FSX to sp1 and acceleration, I have been having issues with scenery textures, especially during missions. What happens is everything looks normal and then suddenly trees will be suspended in mid air, and some parts of the screen will seperate into solids colors or random suspended water textures. These solid textures completely block out the screen most of the time and then disappear and reappear randomly and continually. This makes FSX virtually unusable as you can't see what attitude you are in or where you are going.
Hopefully some of you will have an idea of what I am talking about as it is very difficult to discribe. I will try to get a screenshot of it next time. Anyway, I was wondering if this could be a graphics card problem. Like I said, FSX was fine until sp1 and acceleration was added. Any suggestions would be greatly appreciated.
ATI Mobility Radeon X1300
T2050 @ 1.6GHz (2CPUs)
Memory 1022MB RAM
DirectX 9.0c
Thanks,
Matt