I kinda figured the best way to redo sessions was to write an extension function that set $wgUser to a new User, based on your sesssioning. This, of course, doesn't prevent Cookie-based sessions from being used.
I'd find the bug in Mediazilla http://bugzilla.wikimedia.org/ and attach your patch(es) to that.
-- Jamie ------------------------------------------------------------------- http://endeavour.zapto.org/astro73/ Thank you to JosephM for inviting me to Gmail! Have lots of invites. Gmail now has 2GB.