open gl issue?

[zepto]

Hi

I'm running AC3D on my notebook with windows XP. Very often the application stops showing edges in the viewports. When I zoom in very close to the surfaces they reappear. When I zoom out again, they disapear once again. This is very annoying. And it makes the use of wireframe totally impossible (As it renders all objects invisible).

Is this an open gl issue?

If it is, what setting should I adjust?

Don't tell me to download the latest driver for my graphics card - I already did.

My graphics card is a Mobile Intel 915GM Express Family.

(I've actually experienced this on several windows based notebooks).

Please, help...