Beating the Cisco VPN Client Error 51 On Leopard
I had this error popup today on my Mac OS X Lepopard 10.5.4 machine.
This is not cool as, well, I NEED MY VPN TO WORK!
Thankfully google came to my rescue. The solution is to execute the following in Terminal:
sudo /System/Library/StartupItems/CiscoVPN/CiscoVPN restart
Thanks for the answer, VirtuallyShocking.com.