Firefox crashes on startup

[Justin Smith]

A very odd problem!

On startup, firefox and thunderbird both produce the messages

/home/jsmith/.gtkrc-2.0:2: Unable to find include file:
".gtkrc-2.0-scrollbar_cog"

(Gecko:7801): GLib-GObject-WARNING **: cannot register existing type
`GConfClient'

(Gecko:7801): GLib-GObject-CRITICAL **: g_object_new: assertion
`G_TYPE_IS_OBJECT (object_type)' failed

(Gecko:7801): GLib-GObject-CRITICAL **: g_object_ref: assertion
`G_IS_OBJECT (object)' failed
Segmentation fault (core dumped)


On the other hand, epiphany and mozilla both work perfectly! After
deleting the .mozilla/firefox directory, firefox works ONCE (i.e., it
works, but every time afterwards, it crashes). It's as if it can't
tolerate the existence of a .mozilla/firefox directory or can't read or
parse it.

uname -a

FreeBSD vorpal.math.drexel.edu 6.2-PRERELEASE FreeBSD 6.2-PRERELEASE #0:
Wed Oct 11 11:09:36 EDT 2006
jsmith at vorpal.math.drexel.edu:/usr/obj/usr/src/sys/GENERIC  i386


This problem first appeared after upgrading Gnome to 2.16. Oddly,
another computer seemingly configured exactly the same doesn't have this
problem.