How to get content CMS to root ?

[frmessages]

Hello,

I would like to have the CMS in root, like : http://www.example.com
instead of http://www.example.com/content/ (ugly and useless)

Actually when i am logged as Admin there is no problem getting the CMS to display to root, but when i am Unregistered the CMS redirects to http://www.example.com/content/
There is no way i can go back to http://www.example.com, it redirects to the directory content/
This is somehow annoying.

My settings :

I have 4.0.3 installed, all mods disabled (i had Custom friendly URLs but disabled and there's the same issue). I chose the advanced URL rewriting.

In CMS Url options i have /
And in CMS Url in tabs i have /

Any idea ?