@wpgurus : You’re right, i want to remove the “homepage” part from the url.
I just checked the settings, it’s strictly standard :
– wordpress url == website url = domaine name
– permalinks : /%postname%/
I don’t think there is really something wrong : i just think that the fact that all pages and posts in my site are declared as descendants of homepage make them have all of their ancestors in their url, and unfortunately, that includes the name of the homepage.