User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:18.104.22.168) Gecko/2008070206 Firefox/3.0.1 Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:22.214.171.124) Gecko/2008070206 Firefox/3.0.1 You simply cannot use the Help menu item to initiate a Firefox software update check. This may not be relevant, but the Firefox checkbox in the Updates tab of the Advanced section of the preferences is also grayed out. Reproducible: Always Steps to Reproduce: 1. 2. 3.
Duplicate of #4318855?
Duplicate of #318855?
Thanks Mike. It sounds like, yeah. OS X this will happen if you run Firefox from within a DMG image. In such a case the menu item will be grayed out because the container is read only. Marking as duplicate.