startx didn't work for UID != 0. The XWindow server wasn't started. I got an error saying something like
Cannot open /dev/tty0 (No such file or directory) Unfortunately the Xorg.log file is gone now. I will try to reproduce the error and post it here this evening. Installing the xserver-xorg-legacy package fixed this. Problem is, it is not installed by default during the upgrade. Its not even on the Recommends list. Regards Harri