Hi, I have WP MU 3.2.1 and BP 1.5. Reviewing your manuals, I've known about the mu-plugins:
Is this concept working in the last version of WP (3.2.1)?
In my case, I need that new user-created sites look the same and have a set of plugins activated by default. What should I do?
(a) use the mu-plugin functionality, or