Ah, that's a great tip, thanks. There are some bugs with unity relating to keypresses after a major state change, and this looks like one of them. I'll talk to unity about that this week and see what they say. The main variant that we've seen is that when you are off on another window and then click back into unity, the first click registers as a left-click instead of a right-click if you were right clicking. Hopefully something fixes in unity 3.0, but I will talk to them about it. Nicetip on the "press shift" workaround, though!