[X4U] errors on graphic display

[dgh]

Hi, I just did a reinstall of Tiger on my MacPro and now I'm having  
strange problems with my display. There are areas in the screen where  
extras lines are drawn or are missing. It really shows up with text.  
For some strange reason when I grab a screen image of it it won't be  
captured. These areas of extra or missing lines are only temporary  
and change when I switch programs.

Thanks,

DG Hagey