URGENT: sid update - now can't start X

[Rick Macdonald <rickmacd@home.com>]

I've been running sid for some time now, but only update occasionally. I
updated my laptop last week without problems and today did my desktop.

Now I can't start gnome, or even run "startx". The last few lines that I
get are:

Error loading keymap /var/tmp/server-0.xkm
Couldn't load XKB keymap, falling back to pre-XKB keymap
Could not init font path element ...speedo... removing from list!
Waiting for X server to shut down

The speedo problem has been there for months so isn't related.
I didn't think I was using XKB extensions of any kind.
The upgrade made no changes to my XF86Config-4 file.
I'm using an older nvidia driver (#799 or so).

Any ideas?

...RickM...