How to allow middle-clicks to close last tab on Firefox 3.5?

How to allow middle-clicks to close last tab on Firefox 3.5? A middle-click on a tab will close a tab on Firefox except for the last tab. I know that there is some setting somewhere that allows this because I have one PC set up long ago which does this, and one PC which I set up recently which doesn't.
Asked by: Guest \| Views: 267

Total answers/comments: 2

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bert [Entry]

"See this article : ""Closing the last tab in Firefox 3.5"" for how to manually do this.
The article also recommends this add-on : Last Tab Close Button, which quote ""shows Close button on the last tab in Firefox 3.5*, which closes the last tab but not the browser""."

bert [Entry]

"try setting in about:config

MiddleMouse key
MouseWheel key"