I've been using my desktop since the release of 10.10, and as per usual its very cluttered. I spent a few hours today tidying the system, and I've found a really annoying area that I'm unaware of how to fix. The Open With... dialog contains several duplicates and even bunk entires. How can I remove these?
EDIT: I've also stumbled across a great tutorial on this subject http://greeennotebook.com/2010/11/clean-up-the-open-with-menu-in-ubuntu-10-10/