I have changed the adress of my blog, following the codex instructions.
The blog is located here : http://hcerezuela.free.fr/gouttes/
The slash is not taken into account in the wordpress interface, and the blog's adress URl indicates : http://hcerezuela.free.fr/gouttes
When I enter the adress without the slash in firefox, everything is fine.
But, the adress without the slash does not work with internet explorer and gives a page : "moved permanently".