I just set up a new WP multisite containing 3 blogs and using domain mapping.
If I login using blog A and then go to the blog B backend I have to login again. Ok, annoying but not really a problem. I think it is because of domain mapping. Then, logged in in A and B I go back to A and want to log out there -> site is just reloading.
I can only log out if I first log out in the same order I logged in. Thats now really annoying.
Any ideas? :D