[This is in OS X Mountain Lion with Evernote ver. 5.2.0] To stop Evernote from loading the Evernote helper app at startup (i.e., stop the loading of the Evernote elephant in the menu bar), go to the Applications folder in the Finder (pretzel-shift-A on the keyboard) and launch Evernote.app. In Evernote, under the Evernote menu, go to Preferences. On the General tab in Preferences, in the subsection Evernote Helper, uncheck all of the boxes. Close the Preferences pane, quit Evernote, and restart the computer. The helper app should not load when your machine restarts.