Existing users, 
I've just performed the update from an installed v2.0.1 to 2.0.2. This resulted in a Kernel Panic during the necessary reboot (I OK-clicked the message that the Boot Caches were being updated)...
But after the reboot everything looks fine. For me, Little Snitch is totally indispensable. Especially when you consider the low profile of Mac OS X' built-in firewall (even in Leopard).
Little Snitch
Informs you when an app tries to establish an outgoing Internet connection.
Version: 2.2
Update from 2.0.1 resulted in a Kernel Panic
Feedback Type: Troubleshooting Report
Contributed by: tcloer Wednesday, January 30 2008 @ 12:00 AM PST
Product Platform: MacOSX
Used Product For: Less than a month
System Info:
Comments
Update from 2.0.1 resulted in a Kernel Panic - Wim Waman
Yep. Same here. And after a forced restart all the rules are gone, so i had to confirm or deny all outgoing traffic again. Not smooth.Wednesday, January 30 2008 @ 12:00 AM PST
Update from 2.0.1 resulted in a Kernel Panic - pendragon
Same here. A KP on my Intel machine (10.5.1) during the cache cleaning mode, but not on my PPC (10.4.11). Repaired Permissions, Safe Booted, and ran DiskWarrior with no problems noted.Still, the KP is disconcerting.
Wednesday, January 30 2008 @ 12:00 AM PST
Update from 2.0.1 resulted in a Kernel Panic - wafa
I did have the same problem and I had to power off and reboot; after that everything seems to be OK.Wednesday, January 30 2008 @ 12:00 AM PST
Update from 2.0.1 resulted in a Kernel Panic - velgor
Ditto--kernel panic and directory damage for my trouble.Wednesday, January 30 2008 @ 12:00 AM PST
Update from 2.0.1 resulted in a Kernel Panic - ajbgmex
Same here on 3 macs.Reply to This
Wednesday, January 30 2008 @ 12:00 AM PST