User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0 Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0 It's very easy to get used to the left-click vs. middle-click distinctions that Firefox supports. If you are used to middle-clicking URLs in Firefox to open a new tab, and then you go to Thunderbird and the middle-click does nothing, it makes for a frustrating experience. Setting the following in prefs.js: user_pref("network.protocol-handler.app.http", "/home/custom/bin/firefox-open"); user_pref("network.protocol-handler.app.https", "/home/custom/bin/firefox-open"); allows one to customize the left-click action. There seems to be no way to customize the middle-click action. Perhaps this is a specific case of the more general problem of being able to run custom programs/built-in code in reaction to events ( such as middle-click of URL )? Reproducible: Always Steps to Reproduce: middle-click on URL. Actual Results: Nothing. Expected Results: Whatever I told it to do.

Confirming.

*** Bug 285844 has been marked as a duplicate of this bug. ***

I wish to have a new window opened by default in Firefox, but a new tab, when middle-clicking from TB. As (Nickolay Ponomarev said in bug 285844 that is a duplicate of this one) I confirm this bug too.

I too have Firefox set to open a new tab when I center click. I also have it set to open outside calls to it in a new tab. When I recieve a URL in my email, I typically center click on it at least twice, if not more, before I realize I have to left click on the it. Although I have not yet reverted to swearing when it happens, it is still very frustrating. Sign me up for this bug! What Happened to the "Add Cc:" pull down? I hope this post automatically add it --Tony