For those who recently upgraded to Lucid Lynx, and the vpn client seems to have broken when and you get the error below:
Starting /opt/cisco-vpnclient/bin/vpnclient: insmod: error inserting ‘/lib/modules/2.6.32-22-generic/CiscoVPN/cisco_ipsec.ko’: -1 Invalid module format
The solution is rather simple, you just need to uninstall your vpn client and reinstall it again instead of install over the old version. Simple and effective to me 😀
For those who is trying to get the Cisco VPN up and running, head to this page and read all about how to do it.