I am using Automatic Node Titles on my site, but not for all of my content types. When I go into the Basic Page content type (which is not using Automatic Node Titles), my title field is gone. I have disabled the module, and it doesn't seem to make a difference.
I've poked around, and with the module off, none of my content types have titles anymore. This is a pretty critical problem, given that I can't create regular content on the site since there is no title field.