I'm trying to update Firefox. Currently I am on v 3.0.3. I downloaded the newest version, and tried to add it to the application folder. There is a dialog that says "Do you want to replace an older version" and I click yes. But then I get a dialog box saying I do not have sufficient privileges to update. I've checked my permissions for the Mac Hard Drive, and the Applications Folder. I have it set for Read and Write for all categories, but still not able to upgrade. I also checked inside the current version of Firefox, and in the Advanced tab, in the dialog box for updates, the box for Firebox is greyed out. I cannot figure out how to change that. I'm on a Mac Pro Early 2008, OS 10.5.8 Thank you for any assistance you may be able to give.