Removing Little Snitch completely (Mac OS X Snow Leopard)

"Have you tried downloading Little Snitch again and running the Uninstaller?

Little Snitch 2.2"

"There's no need to edit any files; just unload the service and delete its plist:

sudo launchctl unload /Library/LaunchDaemons/at.obdev.littlesnitchd.plist
sudo rm /Library/LaunchDaemons/at.obdev.littlesnitchd.plist"

"I needed to remove Little Snitch from a system that wouldn't boot (hence, couldn't use the uninstaller) and accomplished it by logging in to Single User Mode (hold down Cmd+S) then mounting the drive and running commands from a script posted at apple.stackexchange.com/questions/56481/remove-little-snitch-via-script

Danger! my system had no data - you could mess yours up!

#Kill Little Snitch Processes
killall $NetworkMonitor
killall $UIAgent

rm -R /Library/Application\ Support/Objective\ Development/
rm -R /Library/LaunchAgents/at.obdev.LittleSnitchNetworkMonitor.plist
rm -R /Library/LaunchAgents/at.obdev.LittleSnitchUIAgent.plist
rm -R /Library/LaunchDaemons/at.obdev.littlesnitchd.plist
rm -R /Library/Little\ Snitch/*
rm -R /Library/Logs/LittleSnitchDaemon.log
rm -R /System/Library/Extensions/LittleSnitch.kext
rm -R ""/Applications/Little Snitch Configuration.app""

Worked for me...

I found that using launctl alone wasn't enough - I guess the kext was still loaded, because I'd see LS(4050) Little Snitch Start in the verbose startup messages after I'd unloaded and rm'd all my /Library/LaunchDaemon/ scripts"