php warnings when deleting a new blog, after installing multi-db

Hi All,

I got my wpmudev premium account last week and must say i'm pretty impressed so far with most plugins, but haven't had much luck with multi-db.

So far i've managed to get multi-db to work, after reading several blog- and forumposts and some trial-and-error.
I've got my 258 db's, my mainblog in the vip database (didn't copy overthere by move-blogs, so i did it by hand) and i can create (or deactivate) users and blogs without a problem; everything seems to work just fine!!

Whenever i try to delete a blog though, php throws some warnings, and the data remains in the database.

The error i get is:

Warning: reset() [function.reset]: Passed variable is not an array or object in /var/www/wp-admin/includes/mu.php on line 50

Warning: Cannot modify header information - headers already sent by (output started at /var/www/wp-admin/includes/mu.php:50) in /var/www/wp-includes/pluggable.php on line 865

Anyone seen this behaviour before? Many Thanks!

Paul
running wpmu 2.7.1 with multi-db-2.7.1