Windows Shell dialog boxes do not disappear
I've recently noticed on my Windows Vista machine often when I copy/delete large files, the transfer will complete (0 bytes remaining or whatnot), yet the Windows Shell dialog box (displaying the file operation/progress/etc.) remains indefinitely. Cancelling does nothing except change that status to "Cancelling..." and the only solution is to kill explorer. This is a rather odd issue, which I'm pretty sure has occurred previously on another machine I used. Does anyone have any ideas what could be the cause here?