Original Link: http://furbo.org/2013/04/22/launch-services-woes/
So, the next time you’re seeing general slowness on your Mac, don’t forget to give Launch Services a kick in the pants. Guaranteed to be more effective than zapping your PRAM.
/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -seed -r
Useful tip.. I ran into this on the MacBook Pro I use at the office and my air..