Congrats on 4.0!
I have been using Paint.net for years and this new update finally made me register here to offer my thanks.
I am a bit thrown off by the moving of certain tools, but I will get used to it. I am loving a lot of the new features. I really "cut-my-teeth" with digital art/manipulation using Paint.net. As I got a little more advanced, I started to use some of the other (expensive) programs, but I would almost always fall back on Paint.net because it was so familiar to me.
I LOVE that I can now move my layers and thumbs around with click-and-drag. This, along with a multitude of other new features, has really brought Paint.net up to compete with the big boys.
Thanks again.