blogs don't work anymore


I just moved my wpmu system from a testing server to a new official domain. It seems I did everything right in updating the DB and changing appropriate values in wp-config.php.

however. now I can't access my subdirectory blogs. only the main blog.

does anyone have a clue as to what has happened?

I smell .htaccess trouble, but I don't get how it happened as everything is run on the same server, there's only been dns-redirecting involved.