I have a new Dell M6300 and am using Solidworks 2007. When SolidWorks is running and I am sketching, ocasionally the mouse will becomeunresponsive and the window will black out. The other programs running are unaffected. In 5 to 10 seconds the mouse will start responding and the SolidWorks window will go back to normal. This problem is worst when SolidWorks is first started. After the first 15 minutes, the problem goes away. I am running XP Pro SP 2, the screen is 1440 x 900, and I have installed the latest driver for the Nvidia Quadro FX 1600M. Any suggestions?