Last night I my VPN client wouldn't load. It was complaining it could not connect to the subsystem. It returned an error 51. After doing some research around the web, I found this command. It is very handy. It means I don't have to reboot. Just go to the terminal and type in the following.

sudo /System/Library/StartupItems/CiscoVPN/CiscoVPN restart

Tags: Leopard, Cisco VPN