Application Ownership

The title might not be appropriate , my problem is that
I have FireFox (FF) 3.0.5 installed with some plugins in Windows 7 beta under an Administrator account but when I try to run FF under a general user account it comes without any plugins unless the mouse right-click on it and "run as administrator".
Is there any chance allowing users to use those applications that have been installed and set-up by the administrator?

You might need to reinstall the plugins under a general user account for them to work

I am doing it this way but it does not make sense, if there are 10 users accounts then we need to install same stuff for 10 times? Anybody think this could be a bug for the beta version?