The implementation of Firefox Preferences > Downloads > View & Edit Actions appears to be highly flawed. It surely shouldn't be blank by default, as that makes for a very confusing user interface. Installing mozplugger adds FLI, QTL, RGB, and SGL files to the list, which probably doesn't help much.
-- cannot "add action" permanently when opening files https://launchpad.net/bugs/49963 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs