sorry but i have Xubuntu 7.04 (i got a PII 450Mhz) and i got the
firefox installed version "2.0.0.6+1-0ubuntu1" from the synaptic
manager. before doing the fresh install of the Xubuntu, i am
installing the following additional firefox files:

firefox-dbg
firefox-gnome-support
firefox-launchpad-plugin

if this will still not work, i will do a fresh install of the Xubuntu.