Created attachment 533414 [details] gdm log When upgrading from Fedora 15 to Fedora 16 on a x86_64 system, preupgrade installs caribou.i686 in place of caribou.x86_64. One has to fix that himself, by logging in a console and uninstalling the reinstalling caribou. Preupgrade 1.1.10 / Yum 3.4.3 You can reproduce this bug easily, just try to upgrade from fedora 15 to fedora 16 on a x86_64 machine and the bug will show up on next reboot (as gdm showing the "something went wrong" screen) Attached is the interresting part of my /var/log/gdm/:0-greeter.log.1
This bug just bit me too, though I did a normal upgrade, not a preupgrade. caribou-0.4.1-1
*** This bug has been marked as a duplicate of bug 739130 ***