In Windows, Firefox has a nifty feature that was missing on Linux. If you click to a tab header with middle button on Windows it closes the tab. But in Linux it pastes copy/paste buffer as a URL to the location bar. To close that and make it running like it is in Windows all you have to do is:
– Go to your $HOME/.mozilla/firefox/<random characters>/
– Create a file called user.js (if it is not already there)
– Add this line in it:
user_pref(“middlemouse.contentLoadURL”, false);
– Restart your browser
Enjoy your middle button