I pulled all the VBO code out thinking that was the problem, For this project I can probably fall back on Display lists. But this might have an impact on my InfinitEngine which I am working on as it used simialr technology.

I'll re-write the engine to just use glVertex / glTexCoord etc rather than vertexarrays and we'll see if it makes a difference.

glIntercept eh. I just downloaded it, looks like a really cool piece of software and it's free .

Thanks for debugging Sascha, I really appriciate it