I first new there was a problem when I discovered that anonymous users were refused access to the registration page.
Reading Drupal forum notes etc... I started to explore the database and tables out the back.
- Repairing the database didn't work.
- The registration page isn't a node, so I can't edit the permissions to access it
- I discovered that the sessions UID's listed registered users (1 etc) but not UID = 0 (anonymous users)
Could this be related to the problem at hand? It's interesting anyway :-), especially since I did a bulk mail to all the club members that the website was up and running an hour before I discovered the glitch!