Since the last update that I have done (I'm now with the 4.0 final) I have a strange behavior when I use the middle click of my mouse to scroll on a web page under firefox.

When I do this click and quickly a movement to the title bar, my windows jump. If I'm slower this effect doesn't happen.
I never had this problem with the previous versions, this is new to me.

This problem doesn't seems to happen under the Aero theme, but I'm mostly using the basic theme with Windows.

System :
Windows 7 x64
DisplayFusion v4.0

(I have joined a picture of the guizmo that I'm talking about since I don't know the exact name)

I just installed it, no more problems !
Thank you very much !