Ever tried to delete a file, and got that stupid error, "Cannot Delete Folder: It is being used by another person or program?" And you're wondering who else is using your computer, and you get paranoid & get out your tinfoil hat... gah.
Unlocker (http://ccollomb.free.fr/unlocker/), a free (donationware) utility solves that problem. Most of the time it is really just Windows Explorer that likes to keep hold of certain files for no particular reason.
My question is - Why doesn't Microsoft just add this to Windows Explorer & buy this guy out? I think the tool is worth at least 10 million of the 20 million Microsoft seems to use to buy a business. Hey, they could buy 2.