I am deploying firefox in a shared desktop environment and they all require the same firefox extensions. I have downloaded the .xpi files and when I install them it only appears for me and not for the other users on the PC. I need to be able to install these extensions once and have them available to all users on that PC. I tried the -install-global-extensions command, but looks like that was removed from Firefox 10. Does anyone have any suggestions to my problem? thanks!