I have begun to loath a particular discrepancy in the Flash 8 IDE (on OSX at least) that is particularly nasty if you are developing components that contain pixel fonts. For organizational purposes, when I develop, I like to build the pieces and not worry about sticking them on a new layer and then when I come to a stopping point, use the handy shift-command-d distribute to layers command (which also names every layer the name of the clip on it). Unfortunately, Flash 8 likes to take everything and move it a half pixel in some direction or another, thereby blurring your pixel font and forcing you to reposition them again to the .0 pixel.
Another little wierdness has to do with the output window (which I have all but abandoned at this point). If you assign mouse handlers to clips and send a trace to the output window, it gives focus to the output window, thereby forcing you to click twice on anything on the app before the mouse click will register.
