Skype avoid becoming a supernode

[chiefbag]

Hi just thought I'd throw this question out there..
I have been doing some research into Skype and I'm interested to know if anyone has any has noticed any increase in bandwidth usage after installing the Skype client.
From what I can make out the Skype client works as a P2P client which in certain cases will allow your machine to be used as a "supernode" depending on available bandwidth,CPU and probably the highest precursor is having a static public ip.
I wonder if the best way to overcome this would be to run the client in a VM or under a domU and then throttle the available resources as from what I can see it would be impossible to implement any stunts on a firewall.
Any thoughts?

[gentoo_dude]

I know that under windows there is a registry to disable that setting. We have implemented at my .edu when we deliver the skype install to the users when they request it.

[chiefbag]

I thought that the registry gets updated every time you reconnect to skype?
If this is the case it is impractical to try and edit the registry

[gentoo_dude]

Correct, it would be impractical to write that registry if it would update every time you run the skly. The registry, actually disables the super node option for the client for good, so skype reads that registry (instead of over-writing it) and then sets the client preferences accordingly.

[chiefbag]

I see. Do you have specific details on what to edit?

[gentoo_dude]

The following post: http://forum.skype.com/index.php?showtopic=265001 shows that the option is not available in linux since only versions 3 or above have the setting enabled. If you still need the windows registry let me know and I can post that.

[chiefbag]

That would be great if you could post details on the registry keys to edit.
Thanks

[gentoo_dude]

The registry is:
HKLM\Software\Policies\Skype\Phone\
DWORD: DisableSupernode with values 0 or 1 (Supernode: 1 disabled, 0 enabled)