Stupid managers that will then either go to conference rooms for meetings or into their own office. That's the way it works here. All of the devs & qa that need a quiet environment are stuck in cubes or open offices while the managers, directors, VP, etc all sit in their offices with the doors closed. I absolutely hate it.

About 10 years ago at a different employer, we planned a trip to a customer's office but I woke up late and missed the car by literally 5 minutes. We were in an open office plan where we faced each other...sales was also in the same room sitting right next to me. Since I missed the trip, I was the only person in the office for the rest of the week. Holy-cow did I get stuff done. My productivity shot through the roof and I swear in a few days I did probably 1 - 1.5 months of work. I told the owner about this and listed the things I did while they were away. He said something along these lines: "800 bucks per month to rent an office for you is nothing compared to your salary." A couple weeks later we all had our own offices. That should be an easy message for management. Don't nickle and dime the small stuff that greatly increases ROI.

I miss having competent management around.