Well, I used the barebone image, upgraded to squeeze, installed lxde-core and xserver-xephyr (+gnumeric) and now am trying to fire up lxde.

Changed startlxde1 to startlxde in /usr/bin/debian-lxde

But the display is blank. The log is: http://pastebin.com/G9eVGUr1

Any ideas why it's happening?

/edit: is there any squeeze barebone image? there are some problems like fopen on man-db which should be fixed in newer releases