Bug#406061: "X: user not authorized to run the X server, aborting"

The only possibility out of the listed that I think could have occurred was that xserver-common was purged at some point after the etch upgrades.

Bug#406061: "X: user not authorized to run the X server, aborting"

In my case, I had no Xwrapper.config at all; plenty of space. kitlann, what did you get? an empty Xwrapper.config? a file containing a wrong allowed_users= line?