How to install Cisco VPN client on ubuntu 11.10
Procedure to follow
Install network-manager-vpnc using the following command from your terminal
sudo apt-get install network-manager-vpnc
This will install vpnc, network-manager-vpnc and network-manager-vpnc-gnome.
Now you need to left click on your network manager applet (Located in your notification area) And choose "Configure VPN..."
Now you need to click on Add
To start your new VPN, just follow the steps again, but instead of "Configure VPN", you'll click on the entry you created.