I had 9888 installed with the latest Nvidia drivers since it came out. Then this morning I decided to upgrade to 9901. Everything seemed to be going good. But now when I start my system up it boots, goes to the lock/sign in. I sign in, it seem to be doing what it should but then just a black screen, no desktop, no start flag, no task bar. I move the mouse, pointer arrow is the but nothing else. Pressing the start key on keyboard does nothing. Only when I press ctrl/alt/del does anything show on the screen. Any ideals people.