DNS Manager freezes when trying to delete/remove name server

When you try to remove a name server in the name server tab in DNS Manager you get the question “Do you want to delete the glue record” and then DNS Manager stops responding/freezes. I got this problem on a Windows 2008 R2 SP1.

Solution
Microsoft has a hotfix that solved my problem. Check out this link: DNS Management snap-in console stops responding when you edit the Name Servers tab in Windows Server 2008 R2.