When I start my computer using Gnome (well, Gnome + Xmonad), this search window appears that prompts me to search my computer. I'd really like to disable that. Any thoughts?
If you are running GNOME Do, then there are two options.
You can open start-up applications by running
From here you can disable Gnome-Do.
GNOME Do's Preferences
The other option is to disable running Gnome-Do on start-up from within GNOME Do's preferences.
Make sure that the check box that says "Start GNOME Do at login." is unchecked.