Dang, looks like there/s still no preference to disable creating a new window when iTerm launches or is clicked on in the Dock. I only ever use iTerm via system-wide hotkey (i.e. Quake-style HUD mode), and it's kind of annoying that it automatically creates a duplicate window whenever it launches that can't be hidden via the hotkey.
You need to create a saved window arrangement (Window -> Save arrangement) with no windows open, then set this as the default arrangement in Preferences -> Arrangements, and finally change the Startup preference to "Open default window arrangement" (on the General tab).
Wow, this is great: it still creates a new window when clicking on the dock, but it no longer creates one on startup. That's still a lot better than before. Thanks!
Ah, I work with iTerm hidden from the dock and purely in "Visor" mode. If I actually want a regular window to keep around, I can create one by bringing up the visor and then hitting Cmd+N.
It doesn't do that for me. Whenever I click on the dock icon or fire it up via spotlight, iTerm goes in the foreground, but there is no duplicate windows created.
