I set up a WP 3.0.4 MultiSite as a "beta" site. For technical reasons (I'll spare you the story), I had to do a fresh install. The second time, I started with WP 3.1 and have since upgraded to 3.1.1.
There are several features of the Edit Post screen that are now missing in my second installation of WP MultiSite.
*Send Trackbacks box
*Custom Fields box
*Discussion (allow comments and pingbacks and trackbacks) box
I really need to be able to allow/disable comments on an individual post-to-post basis. So a site-wide comment disabling option isn't for me.
I figured out a work-around for the missing excerpt box and can deal (for now) without the other features, but am at a loss for what to do re: the missing Discussions box.