Rectify an issue when Airport stops working in Snow Leopard

1. Check the /var/log/system.log to see if this problem is because of a new program or updated software. See the list of daemons executing just before airport daemon startup.
2. If this problem is because of bluetooth daemons, stop the launch of bluetooth daemon by unloading the same -
sudo launchctl unload /System/Library/LaunchDaemons/com.apple.blued.plist