P5 works ok i guess. You just need to know how to handle it a bit..it has its own personality somehow. When you select/click, don't do it in fast sucessions one after another. Click and wait a slight bit before doing something else. Also if you are gonna do something intensive such as render, create a new figure, add a new figure/prop etc, make sure after executing the command, don't switch to another app to do something else. Seems p5 is picky wity cpu timeslices. If you do it, you might be greeted with a P5 White screen which might refresh soon...or not. If you do keep on switching apps etc or especially run another cpu intensive app, you might just see P5 respond with "Poser 5 is not Responding" error and only a CTRL-ALT-DEL to terminate it might work. Well that's been my experience with it. Might not be everyone's but i'm pretty sure some others experience the same thing. Bottom line, be gentle with P5.