If you use Winamp in Windows 7 you may be familiar with this message:
One program still need to close:
To close the program that is preventing Windows from shutting down, click Cancel, and then close the program.
“Force shut down” | “Cancel”
It appears when you try to shut down your computer and have Winamp running. Fortunately, this error was resolved with the new update of Winamp. If you encounter this error go to winamp.com and download the last version.