Firefox Update Disappearing Act

[Tab Gilbert]

I just did the Synaptic upgrade for firefox.  Now when I click on it
nothing happens. If I repeat click on it some little lines show up on
the screen for a nanosecond.  Since I happen to be freaking out at the
moment is there any way I can go back to my old working version of
firefox?  Thank goodness I am using good old Ubuntu and Linux cause I
downloaded Epiphany which works just fine.  Reading the list I have
not noticed any major problems and am not running any extensions
(which seemed to be the main problems) or any really cutting edge
applications.  Did upgrade to OO2, killed the firefox upgrade the
first time and then I made the fatal move........

Tab
Outer Bubbaistan