Turn off spotlight:
sudo mdutil -a -i off
Unload it:
sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist
Load It:
sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.metadata.mds.plist
Turn on spotlight again:
sudo mdutil -a -i on