I install Firefox as Administrator. When limited users run Firefox, it won't auto update silently (about:config is setup for it). When I run Firefox as Administrator with the same about:config, it updates silently. I've narrowed this down to being that the [updater.exe] does not have user execution rights by default. I can't just change the permissions on the executable due to netsec issues.. Why is this? Why doesn't it have user execute permissions.. As soon as i give a limited user execute permissions to updater.exe, it works.. so it's not the maintenance service, or anything else. Thanks!!!