X doesn't work after apt-get upgrade (unstable)

[Gerard Robin <g.robin3@free.fr>]

Hello,
After apt-get upgrade (unstable), startx fails with the message:
..............
Could not init font path element unix: 7100, removing from list!
Fatal server error:
could not open default font 'fixed'
X10 fatal IO error 104 Connection reset by peer on X server ":0.0" 
after 0 requests (0 know processed) with 0 events remaining.

to fix the problem  I ran: dpkg-reconfigure xserver-xorg
and I changed the section InputDevice with the values of the old
xorg.conf, in my case:
Option     "Device"     /dev/ttyS0  
( instead /dev/input/mice which deosn't exist  
mice is in /dev/.static/dev/input/mice now ) 
Option    "Protocol"   "MouseSystems" 
( instead "EXplorerPS/2"  or ImPS/2" ) 

Hope this helps the other upgraders ...
--
Gérard