Some windows Blank

[Christopher Rob JONES]

Hi,

> But sometimes I like to pull something up on it so it is on screen while
> I am doing something else on my main computer. Or check something with a
> terminal window.

Sounds similar to an issue I had with a video driver a while back. It 
was an nvidia driver and with compiz enabled if I open too many windows 
(not a lot, less than 10) I eventually got blank windows. It was like 
the video driver was running out of ram.

What video card/driver do you have ? Do you have "desktop effects" on ? 
If so, I suggest turning them off.

Chris