Recently updated my WP to WP3.1, and everything seems so nice. With the admin header for easy access across sub-blog. Very much like this feature.
But one thing doubted me is the Theme Editor section gone!! I can’t find it under the Appearance where it usually there =((
Then after searching awhile, finally found it. Was just moved to another place. hahaha
First, click on the Network Admin on the top right corner there.
And now the Theme Editor is now available under the Appearance there =D
Enjoy!!