Great plugin, really essential for multisite installs.
It gave me a scare when I updated yesterday. Unbeknown to me it when I updated, it cleared all my configured menus for admins to see or not see. This meant that when a user logged in they saw nothing in the left hand menu of their dashboard. This was a real drag and I was lucky to find out before having to demo my network for a whole bunch of students this morning. Luckily I tested early on and discovered the problem. Woooaaa, close call.