[ubuntu-uk] Logging into a blank white screen

[John Levin]

Hi all,

Something is borked on my Lenovo 3000 N500 laptop :(

When I boot up, I get the log-in screen as per normal, but after logging 
in I'm faced with a blank white screen, wether with the normal gnome 
desktop or the failsafe. I can get into a shell no probs.

Amongst the errors in .xsession-errors is:
** (nautilus:8497): WARNING **: Unable to add monitor: Not supported

I'm presuming that this has been triggered by a recent update, but 
cannot recall any that would affect the display. Booting into a 
crunchbang live cd works fine

Running an up to date jaunty with Intel graphics.

Suggestions?

TIA

John