User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.2a1pre) Gecko/20090706 Minefield/3.6a1pre Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.2a1pre) Gecko/20090706 Minefield/3.6a1pre Firefox will allow an extension to be installed even if it is already installed and the extension has not been updated. Reproducible: Always Steps to Reproduce: 1. Find an extension in Tools -> Add-ons 2. Find it on addons.mozilla.org 3. Click "Add to Firefox" Actual Results: Firefox will install the extension, giving no indication that the extension is already installed or that the extension is the same version previously installed. Expected Results: Firefox should display a confirmation saying something like "This extension is already installed. Do you want to continue?"
Kind of related to bug 275054, not sure if it is a dupe or not?
Not a dup at all, and almost entirely unrelated.
Essentially bug 301191
I think this is not exactly a duplicate. The user might want to know even if the installed extension is of the same version, so no reinstallation may be needed.