I used to be able to log-on normally up to Aug. 17, 2011. Then something changed after that date and the next time I tried to log-on, Sep. 3, 2011, I was told "VFS initialization failed. Please update your graphics driver". It seems to me that this problem is on SL's side, as I had not changed anything about my computer prior to getting the above message. Also, I did re-install the graphics driver from the manufacturer's website, and that action still did not help me re-achieve the abilt y to log-on. So I am at an impasse.