I had this same problem, which manifested itself as a box that appeared in front of the login screen that said "The configuration file contains an invalid command for the login dialogue, so running the default command. Please fix your configuration."
Apparently, the maintainers changed the location of certain files. This change was (correctly) reflected in the distributed /etc/gdm/gdm.conf. However, I had changed gdm.conf and when the upgrade was installed it kept my gdm.conf and put the new one into gdm.conf.dpkg-dist, presumably because I asked it to keep my file (the default). So it is necessary to manually merge the changes made in the local configuration and the new version of gdm. This is the correct behavior and is not a bug. As a side point, and this probably should be a new wishlist bug report, I think the message about the configuration file is poorly phrased. It took me quite a while to figure out _what_ configuration file contained an invalid command. The simple addition of a file name "The configuration file /etc/gdm/gdm.conf contains..." would have saved time. Liam -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]