[NikkiA]

I don't think there's a UI element for it, but you have to add a registry key, see here:

https://www.cs.uwaterloo.ca/twiki/view/CF/SkypeConfiguration...

[pyre]

How pray-tell, does a Windows registry entry disable super node functionality on Linux and/or MacOSX?

[neworbit]

Well barring effective virtualization, booting into Windows disables supernode functionality on Windows and MacOSX in the same sense that a brownout does