I really like categorization in Outlook 2010. However, my instinct is to always left-click on the categories column, which always triggers a "Quick Click" action and sets the category to whatever the default "Quick Click" category is.
Is there a way to disable that feature? I would like to be forced to choose the category and never have a "default".
Edit: I've tried setting the "Quick Click" category to "No Category" and this seems to work for a while but then later get reset back to a different category. Possibly a bug?
Edit: Nevermind, after setting the "Quick Click" to "No Category" from the ribbon and not by right clicking on individual emails, I don't seem to have this problem anymore. So, the solution, as paradroid pointed out, was to modify this setting from the ribbon.