Sure here it is :) http://demos.telerik.com/silverlight/
Then click on GridView
And then Expand and collapse Andrew. its flikering at the horizontal scrollbar. And since it's not supose to have one its appearing and disappearing very fast. This is one of what I was talking about but there's a more anoying one with the vertical scroll bar
but I just tried again and I'm unable to reproduce it on your live demo. Is this something that was fixed ?