Probleme nach Upgrade von 11.1 auf 11.4

[buntspecht]

Hi!
Nach dem Upgrade von 11.1 auf 11.4 gelange ich lediglich in den Kommandozeilen-Modus, jedoch nicht zur graphischen Oberfläche.

meine Grafikkarte:

/sbin/lspci -nnk | grep -i -A2 vga

00:05.0 VGA compatible controller [0300]:
nVidia Corporation C51PV [GeForce 6150] [10de:0240] (rev a2)
Subsystem: nVidia Corporation Device [10de:cb84]
Kernel driver in use: noveau

startx

xauth: file /home/buntspecht/.serverauth.4904 does not exist
xauth: file /home/buntspecht/.Xauthority does not exist
xauth: file /home/buntspecht/.Xauthority does not exist

Fatal server error:
Cannot move old log file "/var/log/Xorg.0.log" to "/var/log/Xorg.0.log.old"

Please consult the The X.Org Foundation support at [url=http://wiki.org]Wiki: Welcome Visitors[/url] for help

xinit: giving up
xinit: unable to connect to X server: Connection Refused
xinit: server error
xinit: failed
/usr/bin/Xorg is not setuid, maybe that's the reason?
If so either use a display manager (strongly recommended) or adjust /etc/permissions.local

Was muss ich tun??

Grüße, Buntspecht