How to turn off Tunnel connection?

[ljCharlie]

After installing Windows Vista Enterprise, I noticed that IPv6 is on automatically. I am not sure if that is the problem. However, I saw five Tunnel adapter Local Area Connection showed up when I do an ipconfig/all in command prompt window. How do I turn these five connections off? I'm thinking that these Tunnel connections are the cause of sites being very slow and sometimes not even loading the page. I also have a Windows XP Pro as a virtual machine inside of this Vista host machine and when I logged into this Windows XP virtual machine, the page loads fine and/or much faster than it was in Vista. Windows XP virtual machine also uses IE version 7. So I want to turn off the Tunnel connection first and go from there to diagnose this problem.