High Xorg CPU usage during kernel

No big deal… I’ve got plenty else to do. Just curious is all.

Sort of related to Xorg processor usages:
I upgraded to GT280 today, and updated the driver to 177.80. I was hoping it would fix the hanging problem I’ve been seeing in my program and well as in the Mandelbrot program. They both will still freeze every now and then. Now when they freeze, it won’t time out after about 5 seconds, and get back to X windows, it actually stays in the nvidia driver code, and does not leave, so it never gives control backs to X.
Does anybody else have problems with the Mandelbrot program?