Every time Firefox has an available update, I get a message that indicates that it can't be installed because I have "insufficient privileges." There are two userIDs on the computer (a MAC running MAC OS 10.4.11), and both userIDs have "administrator" privileges, which means updates and other changes should be permitted from either userID. I find I have to log into the other userID and update Firefox there, and then it shows the update on my userID. Is there a way to change settings to enable updating from either userID, or at least to change which userID updates are permitted from, since my userID is the primary one used? Thanks.