I'm trying to use the native Cisco VPN client installed with Lion and it's been a terrible experience. The VPN times out between 15 and 45 minutes and I can't seem to fix it. I've followed guides for fixing this problem and it's gotten me nowhere. I copied the .conf files for each VPN that I have and disabled dead peer detection, changed proposal check to claim, and increased the lifetime time to 5 hours. I also changed my racoon.conf file to look in the directory where my custom .conf files are. I could stay connected all day when I used Ubuntu and I'd really like to have that ability back.
Is there a 3rd party client that I could use other than the Cisco one? I don't want to boot into 32-bit mode. Is there another fix that I missed?