Changing my Vista to windows 7 beta I got blue screen crash when loading programs. Went to msconfig in safe mode and closed all start up programs except microsoft essentials. Then started reloading one by one and found the culprit. "Super Anti Spyware Killer free edition." will cause windows 7 to crash. Very dificult to uninstall. When uninstalling from the program uninstall feature in control panel this also caused crash. Found utility tool at website for removal and removed program, now windows 7 work fine.