ehooh on "Problem with "web adress of wordpress" option"

Hi,

I've have a little problem with my domain name.

With default option i've this:

http://r29694.ovh.net/wordpress/
or
http://r29694.ovh.net/2010-08-23_133613.png

but when i change th "web adress of wordpress" option to put my domain name, it become : http://r29694.ovh.net/2010-08-23_133557.png

Option : http://r29694.ovh.net/2010-08-23_133701.png

Do you know why?

Regards ...