It's the universal truth of open floor plans. I still remember trying to decide if I wanted to annoy the owner, tech lead, or lead designer when it came time to kick one of them out of the conference rooms so some developers could get on a conference call.

That's what is so funny about this whole discussion on open floor plans: it comes up over and over again even though scientific evidence overwhelmingly shows they are bad, employee satisfaction is shockingly low with them... but we can't seem to kick the habit!