We just got our passports. Total processing time was just under 2 weeks, and we did not pay for expedited. I have a hunch processing time may depend on which regional passport agency is handling things. The one hiccup we had was that they rejected my wife's photo. Fortunately, they had a photo facility on-site, so we were able to get that taken care of, and they gave us a form to give to the photographer explaining why the photo was rejected.
Sitting in the acceptance office with a number of other people waiting in line was a bit of an eye-opener, and gave me some more insight into how to make things go smoothly.
1. Check the passport requirements at travel.state.gov, and follow them to the letter. Make sure you have your driver's license or state ID, your embossed birth certificates with your parents' names, and any other documentation listed on the website.
2. Bring your checkbook. Many acceptance facilities do not accept credit cards.
3. Pay attention to the quality of your photo. If it does not meet their standards, they will reject it.
4. If you're under 18, you *must* have a parent present (with identification) to sign off on your application.
5. If you are under 18 and do not have a parent present, you must either provide legal proof of emancipation or your guardian must provide legal proof of guardianship, either of which must be in the form of a court order.
The passport acceptance facility cannot bend the rules, regardless of time constraints or circumstances. Yes, it can be frustrating, but remember that they're not there to make your life more difficult. They're there because they know quite well what the State Department will accept and what will get rejected, and they don't want to waste your time or theirs filing paperwork they know will get sent back.