If you've been messing around quite a bit trying to fix other issues, the port may be held up by a zombie process or something.
Try rebooting. If that doesn't work, see if the command line where runserver is running displays any message. Shawn -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
