I have WordPress MU installed and running great. The one question I'm having is when someone signs up for a new blog can they not edit their theme? I have all the themes enabled, if they pick WordPress Classic 1.5, WordPress mu Default, or even K2 which I've installed all they can do is edit the widgets and/or the header image/color. They can't edit any of the stylesheets, page layouts, etc.
Is there anyway to allow this?