Dash home - "rdesktop <address>" opens Firefox

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http://askubuntu.com – I'm on Ubuntu 12.04 LTS using Unity. When I go to Dash home (either by clicking the icon or pressing the "Windows" key), and try to run rdesktop, it doesn't work - it either: It either says "Sorry, there is nothing that matches your search" and does nothing, or Opens a new Firefox window on a blank page. rdesktop works fine from the command-line, and I think it used to work OK from Dash as well, but I couldn't swear to that. Does anybody have any idea what's happening here? Thanks John G (HowTos)