"Like the script says, replace "firefox-3.5" with the command used to launch your Firefox (depending on the version, etc). If you don't know the command, go to Applications > Internet and right click the version of Firefox you want to fix (Firefox, Minefield or whatever) and click "Add to panel". Then a new icon (launcher) will be displayed on your panel; right click that icon and select "Properties" -> you will then see the command used to launch your Firefox version in the "Command" field (never mind the %u):"