Random login glitch - fixed (i hope)

If you could provide some good information there might be users who can help you solve this issue.

The Announcements threads have common solutions to certain problems, it is a good idea to look through the last few stable update threads 2nd posts for solutions.

Posting the errors from the journal log could shed some light on your issue.
The command below lists the errors in the previous bootup of your machine.
journalctl --boot -1 --priority=err