This morning I installed 9.5.2. I was continuing a project building symbols. When I went to a right view, and used the rotate tool, the program locked up. I have Click-Drag drawing checked, and I had Snap to Object on. I clicked on 1 corner, then on another corner, and that's when the lock happened. I verified this problem using a blank drawing, creating an Extruded Rectangle, and got the same result 3 times.
I reinstalled 9.5.1 from the CD, and it works fine.