mozilla hangs on startup after -stable upgrade

[Mikhail Teterin]

Hello!

After I upgraded a friend's machine from 4.10-STABLE (Sep 22) to
4.11-STABLE (Dec 19) his mozilla installation (1.4.x) stopped starting
up.

It says the usual 'no running window found' and then just hangs there.
According to Ctrl-T, mozilla-bin is in the "running" state, but no
window ever opens.

I have since rebuilt gtk/gdk and the mozilla itself (to 1.7.5,2), but it
still hangs on start up -- it was running fine before.

All other programs (KDE environment -- he still uses KDE-3.2.2, Applix
Office Suite) continue to run fine, only Mozilla appears affected.

Any clues? Thanks!

	-mi