Remove the InitializeSimpleMembershipAttribute, it seems to lazily initialize the database connection but we can do this on App_Start, this could be a cause of the databases not being created properly
Improve the layout of the speaker page
Make the SessionController on create handle a situation where the user may or may not be authorised (I did have that situation)
Moving around the display of the session details page and moving the gravatar url calculation to a more central place
Modified the Session Details page to layout the data better