The settings page doesn't work at all on WordPress 3.0.5 (multisite).
The settings page is blank. And JS is definitely broken as the admin menus in the left sidebar do not open or close.
The JS Console shows something like:
ReferenceError: Can't find variable: postboxes
I tried deactivating all my plugins, mu-plugins, and drop-in plugins.
Still no dice.
Maybe the options rewrite has not been tested on WP 3.0.x