Scrolling text bug

[yuvalkesten]

When you scroll a window the new content doesn't render well - the text which was suppose to disappear stays and block the new text...

Thanks,
Yuval

My Spec:
Intel Quad Q9400
4Gb RAM DDR2
Asus P5q motherboard - based on Intel P45
IIPC 10.5.6 OSX installed on external USB WD HD
NVidia GEForce GT 220