The following comes to us courtesy of Simplehelp:
FORCE FIREFOX TO OPEN NEW TABS AT THE END
This tutorial will show you how to force Firefox to open new tabs at the end of the tab bar, rather than next to the existing open tab.
This new behavior (opening new tabs next to the current one) was introduced in Firefox 3.6. Some people like it, others don’t. If you fall into the “I want it back the way it was” camp – here’s how to change it. Read the rest of this entry »