I use the Cisco VPN client version 5.0.01 to connect to my company network. It works fine. Lately i have been experimenting with IP phone services Skype and Gizmo. They work perfectly except when i am connected with the VPN client. Every 5 minutes exactly (by the pc clock) at the top of the minute, my call fades and eventually gets disconnected. The calls work perfectly and do not get disconnected without the VPN client connected. So the question is "what does the VPN client do every 5 minutes on the dot that interferes with my call?