X ICE error when logging in

[lyndon at arotau.com]

Since upgrading my xorg in breezy, I can't log in.  The attached
xsession-errors file has the details, which unfortunately I don't
understand.  Can anyone point me in the right direction?

Cheers,
Lyndon

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/etc/gdm/PreSession/Default: could not find the sessreg utility, cannot update wtmp and utmp
/etc/gdm/Xsession: Beginning session setup...

(x-session-manager:7734): Gdk-WARNING **: locale not supported by Xlib

(x-session-manager:7734): Gdk-WARNING **: cannot set locale modifiers
_IceTransTransNoListen: unable to find transport: tcp
_IceTransmkdir: ERROR: euid != 0,directory /dev/X will not be created.
_IceTransmkdir: ERROR: Cannot create /dev/X
_IceTransPTSOpenServer: mkdir(/dev/X) failed, errno = 13
_IceTransOpen: transport open failed for pts/meganode:
_IceTransMakeAllCOTSServerListeners: failed to open listener for pts
_IceTransISCOpenServer: Protocol is not supported by a ISC connection
_IceTransOpen: transport open failed for isc/meganode:
_IceTransMakeAllCOTSServerListeners: failed to open listener for isc
_IceTransSCOOpenServer: Protocol is not supported by a SCO connection
_IceTransOpen: transport open failed for sco/meganode:
_IceTransMakeAllCOTSServerListeners: failed to open listener for sco

** (gnome-session:7734): WARNING **: Unable to read ICE authority file: /home/lyndon/.ICEauthority