NetScaler 10.x Admin GUI Freezes
I encountered on several machines that the admin page of the NetScaler 10.x freezes when opening different items.
You will read a lot about NetScaler and trouble opening the webpage with different browsers. I use Firefox, cause that seems to be the best browser to use administering your NetScaler. When you encounter the freezes (webpage turning grey and nothing happens anymore) just update or re-install JRE. This will fix it.