We have a client computer (Windows 7 Ultimate) where when you use alt-tab to switch between apps, shows a generic application icon in the list of running apps. You cant switch to it, nor tell what it is. There are no other applications running in task manager. Is there a way to see what this application is without having to one-at-a-time turn off all the start-ups? BTW, assorted malware/virus scans all come up clean.