Whoopee. I got my old, slow 150 mhz computer to freeze up with a black screen. The black screen seems to be a MSDos startup window which has the following words emblazoned on it in white: Insufficient Memory.
I believe that this was caused by having too little hard drive memory available and by having poked around in MS IE 5.0 and in Outlook for a while, and then opening and closing the Page Setup window of UFT.
All or none of this may be relevant to the problems others are having. But it's time for a re-boot. -john-