Ok, this is a weird one. I've installed multisite several times before and I've never had this issue.
I can't get to the network admin dashboard. It's obvious that multisite is working, because I do have the "My Sites" option in the top tool bar... but I can't get to the network dashboard. I don't see the plugins menu item either.
Also, logged in, it says that I'm Admin... doesn't say Network Admin.
Can someone please help me? This is weird!