How do I prevent a menu extra from appearing at login?
Try this


  http://macs.about.com/od/macoperatingsystems/qt/ejectcdmenu.htm


or

Rename eject.menu in /System/Library/CoreServices/Menu Extras/ to something else "eject.menu.bak"

restart mac and then rename the file back to original.

Not sure if it works but trying doesnt hurt anyone.