Windows 7: Autocad 2010 Crashes arbitrarily on Windows 7

WIndows 7 ultimate 32 bit
AutoCad 2010 32 bit crashes after running 10-15 minutes, i only receive windows saying the program is not responding, and thus it closes. It is frustrating.
Can anyone help?

It should be compatible with Windows 7 32-bit.
Have you tried re-installing the program? Updating graphics drivers?

Yes it is compatible with Windows 7.
I have tried every option possible which the uninstaller of autocad shows, reinstall, uninstall, last time i even deleted autodesk's folder from program files after uninstall and then install it fresh. But the problem seems to persists.

I just now checked, it seems graphic driver is up to date.

You might want to read this tutorial.
How To Remove Autocad Software

uh okay i did what it said. Deleted all the remaining autocad files. Installed it again. It went good for about 20 minutes and crashed again, with windows message "This program has stopped working".

update: it seems the crashes are .net issue and not Autodesk's fault. Downloading the lastest .net framework 4 should work, or check compatibility of graphic card here Autodesk - AutoCAD Services & Support - Graphics Hardware List