unable to update contact your systems administrator
When I go to help and check for updates I get an error message : a recommended security and stabilization update is available but you do not have the system permissions required to install it. Please contact your systems administrator or try again from an account that has permission to install software on this computer.
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Have you tried contacting your systems administrator or trying again from an account that has permission to install software on the computer?
You can try to repair the Firefox permissions, for details see http://support.apple.com/kb/HT2963?viewlocale=en_US
An alternative approach is to download the latest version of Firefox from http://www.mozilla.com/, then trash the current Firefox application and install the latest version. The user data (bookmarks, passwords etc) are stored in the profile folder, trashing the application will not remove the profile folder, and will be used when you re-install Firefox.
Thanks TonyE for your reply, I will try it.