since I have my new GeForce 250 Gts programs using OpenGL do not work any longer. With my old 8800 GT everything was fine.
I have installed the newest driver from Nvidia (195.62). After the Installation OpenGl works (I tried Blender and FurMark) but after a reboot the Blender and Furmark only show a black screen.
I hope someone (who understands my bad bad english) could help me.