If you are on a page in Firefox and open a link in a new tab (Ctrl-Click on Windows/Linux, ⌘-click on a Mac), it opens in sequence next to the tab you are launching from.
Is it possible to make all "open in new tab" actions open at the end of the tab bar, like in Opera or Chrome?

Crtlkey before.Ctrl, certainly, but neverCrtl. – Hello71 Sep 3 '10 at 17:26