Good idea, thanks - trying the quarantine folder on the desktop now, and we'll see what happens. But with all the Windows 7 users in the world, surely I'm not the only one to want reliable desktop shortcuts? Shouldn't they have patched this problem by now? Anyway, it's a good workaround.

Hey, I bet I know what happened to that can-I-help-you-wipe-your-backside paperclip that used to butt in when you were trying to type: the Troubleshooter strangled it.