Hello, I have some troubles with editor (unity 3.0).
I have some simple scene, everything is OK:
http://img194.imageshack.us/img194/4692/95864938.jpg
When I zoom little bit, picture is strangly cropped:
http://img202.imageshack.us/img202/3623/54913184.jpg
When I zoom again little bit, everything dissappears:
http://img834.imageshack.us/img834/7968/48028102.jpg
I would suspects some wrong settings, but I tried to restart PC, then new projet, no change. Then i tried to change view (2 by 3) and go back and everything is OK. It looks like some wierd bug.