Hello WP Bum,
Thanks for your quick answer. Are you telling me to check the default value in the permalink menu? I don't want to: first, because most of my posts are imported from blogger and i want to keep the same parmalink structure i had in blogger (otherwise it might create a problem with the 3013 redirect, no?); second, i like that structure. For my blog topic, I think it's important to see the year and the month before the name of the post.
What i don't understand is that wp creates permalinks structure of its own, e.g. ...tag/name tag, or confusing tags with category when I have no category at the moment, or .../uncategorized or .../page/4
there is no logic.
Thanks for your help again.
Cheers,
Emmanuelle