Screen tearing

Hello, I recently installed Opensuse 11.0 and I’m running KDE 4.1.2. Every few seconds(maybe 8-10) it appears to be to black bars run through my screen at different locations horizontally. I’m not to sure whats causing this and it gets to be quite annoying.

My Computer:
Intel(R) Pentium(R) 4 CPU 2.80GHz
Total memory (RAM): 1,010.4 MB
Vendor: ATI Technologies Inc
Model: Radeon X1300/X1550
Driver: radeonhd

Any help would be greatly appreciated. Thanks