Multiple instances of apps in "Open with"

[macstatic]

When I want to open a file with "Open with" (in the Finder, right click on the file) I see multiple instances of the various apps used to open a file with.
Why is this and what can I do to remove the additional apps?

 

[ricede]

http://www.tekrevue.com/tip/rebuild-launchservices-fix-duplicate-entries-os-xs-open-menu/

 

[macstatic]

Thanks! This seems to have fixed it