in an answer to a previous question another user recommended a tool to me,
Unlocker. Its original homepage is offline, but there are plenty of websites which offer version 1.9.0 which I downloaded from 2 places, compared the filesize, it was identical, and installed it, then rebooted, but it does not do anything except that there's a new icon in the tray.
There are no new menu items in the Windows Explorer's context menu nor does anything happen when I send any element to Unlocker using the "send-to" menu. It created two shortcuts in the start menu, "Start Unlocker" and "Start Unlocker Assistant" which also both don't do anything. Any suggestions?