RDP/Terminal Services session taking long time to login

When attempting to connect to a remote system with Remote Desktop Protocol, you may experience a significantly long pause (in some cases 30-45 minutes) where all you see is the background of a desktop.

Resolution:
Regedit
add the following entries to configure the MTU settings:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NdisWan\Parameters\Protocols\0]
"ProtocolType"=dword:00000800
"PPPProtocolType"=dword:00000021
"ProtocolMTU"=dword:00001400