Removing old version of Firefox in 10.3

I have the latest version of Firefox 3.0.5 installed. The old 2.0 version is around so I attempt to remove it, but I get:

Usage: usr/bin/update-mime-database -hvV] MIME-DIR
No directories in update-desktop-database search path could be processed and updated.
error: %postun(MozillaFirefox- scriptlet failed, exit status 1

What can I do to sdlve this problem so I can just remove the old version.