Another misconception I'm seeing in this thread is that Agile == open floorplan. Actually, Agile people recommend that each team have its own dedicated workspace with good noise insulation. Within the space, there should be a combination of shared space for group work and pairing, a room with a door for private/distracting conversations, and personal space for individualism.

See Alistair Cockburn's "Convection Currents of Information" for the theory (in his book "Agile Software Development") or my own "Sit Together" for the how-to (in my book "Art of Agile Development" and online at http://jamesshore.com/Agile-Book/sit_together.html ).