apt-get upgrade broke X

[Andrew Dixon]

Hi All,
last night I "#apt-get upgrade"d my system and this morning X was
broken.  I tracked the problem down to my new set up not liking the
"1600x1200" mode in my "/etc/X11/XF86Config-4".  The other modes work
fine.

I'm using:
        XFree86 4.1
        Matrox G450 card with mga_drv.o and mga_hal_drv.o drivers from Matrox

Has anyone else come across this?

thanks for any help,
Andy