Window Docking - Should it be done by default?

[micheus]

I have use gimp (an old version) very seldom but from time to time.
I don't remember how to dock the windows and it creates many,
and I get very frustrated every time I use it.

I have the same problem.

... although, sometimes I also get annoying with automatic docking in Wings3D. It's not so bad, because we can hit the Shift key even after we start dragging - we just need to that before release the window.
Maybe we could show a hint telling user to use the Shift key to avoid the docking!?