This is a strange one: I installed Drupal version 6.something at Justhost about 6 months ago, for a client.
Now they want some edits, but when I visit /admin the site just redirects to the home page. In fact, if I visit ANY other page (apart from the 4 that are published) I just get redirected to the home page. for example even /nopagehere dumps me at the home page, but there is 'no page there' so I would expect to get a 404.
The only way I can get a 404 is by changing the node number of a page in ?q=node/xxx to something that does not exist.
All this made me think that the host must be running some appache or .htaccess rules to redirect requests to the home page, but even after 5 emails to Justhost support they are still saying this must be a Drupal issue.
If anyone has any ideas, please help?