If you are sequencing or deploying Skype (now provided by Microsoft) within your enterprise (using the business edition), it might be worth knowing howto disable updates.
Set this registry key;
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Skype\Phone] "DisableVersionCheck"=dword:00000001
Hey-hey!
Check Skype package from subscription service. It contains all required settings.