I cannot contact to our corporate VPN from outside of our network using the Cisco SSL VPN Client; I am the only user on our network experiencing this issue. When I attempt to connect using the SSL VPN Client, I recieve an error stating "The VPN client was unable to successfully verify the IP forwarding table modifications. A VPN connection will not be established." This error is received after authentication occurs and while the tunnel is being established. Multiple attempts will sometimes result in success but it is rare.
I am Windows Vista Business SP1 (although the error occured before the installation of SP1). Hardware is HP Compaq 6710b.