I often have the problem that SSMS 2012 freezes if I select a Server in the Object Explorer window, to witch I was/is connected (like to disconnect).
This doesn't happen, If I select a database directly, only when I click on the Server itself.
This also doesn't happen with all servers, and till now I wasn't able to find a common tried of these servers.
These hangs usually take ~20 mins, but it can also go up to a few hours.
These hangs can also make VS/Office or other SSMS instances hang.
I created a memory dump of the last hang I experienced.
Since I can't select it in the OSList:
OS: Windows 8 x64