Problem with SP2 ?

I downloaded and installed the service pack 2 the other day and now I keep getting weird scenery glitches. Looks like a huge wall and has both water and cloud textures in it. I was over the Atlantic Ocean at the time on a flight from Charles De Gaulle to KJFK at FL315. I had never seen this before the update was installed. I was able to make it go away for a while by switching views by pressing the S key. But it would not stay gone long. I thought I would ask if any one else is seeing the same thing before I un instaled the service pack. I do not have Acceleration. 8-)