Ah, it does say the Icon is an x-application, not an actual link to a directory. Tthis leads me to believe that your upgrade to 2.4 deleted a program that used to automatically show you a summory of your computer when you clicked it. If you remember what directory it used to point to? Perhaps, /home/username? You can open a terminal, browse to /home/username/Desktop Type, rm "My Computer" Getting rid of the icon. Then ln -s /home/username "My Computer" Should place a new icon on your desktop for you.
That would lead to your home directory. YOu can link it to any directory with that command.