Ever tried deleting a file only to get this error message?

Error Deleting File or Folder. Cannot delete [some file or folder]: It is being used by another person or program. Close any programs that might be using the file and try again.

It is frustrating, especially if you can’t determine which application or process is locking the file or folder — a definite Windows XP nuisance. Enter Unlocker.

Unlocker is a utility showing which program/process is locking a certain file, and then gives you options to unlock the file or kill the process. I’ve found this to be the easiest solution to such problems.

Here’s a link to the app.