60% of the time GDM will fail to bring up enlightenment/gnome after a reboot. I will be forced to hit CTRL ALT BACKSPACE and relogin. After the inital hang, things proceed normally. I would guess it is related to the increased time needed to start enlightenment/gnome the first time as they are not cached.
Let me make sure this is clear: you try to log in and the login process hangs after you have entered your login name and password? What does the screen look like at this point? Is the Red Hat logo still showing, for example? Have you checked the logs to see if any error messages are showing up? gdm logs X output in /var/gdm; in your case, the contents of /var/gdm/:0.log would be interesting. During the hang, go to a text console with ctrl-alt-F1, log in as root, and copy the contents of /var/gdm/:0.log somewhere and mail them back to bugzilla (respond to the email containing this message).
closed; lack of input