Superadmin menu not showing up

I’ve installed wordpress twice now as a subdomain installation with version 3.1. Before I had a subdirectory installation on wordpress 3.0, which worked great. The problem I’m experiencing now is that wordpress is not giving me the superadmin menu.

I’m sure I did the installation correctly and doublechecked everything. In MySQL I can see all tables that I need for the network installation and when I’m login in to wordpress I can actually click on network admin (top right) and create new sites.

I left the admin login as “admin”, just to make sure that everything is as standard as possible. I can’t for the life of me figure out what went wrong and why this isn’t working. Any and all input is appreciated. I tried most things that I found on the forums, but am open to trying them again.