Okay, thanks for the info. Ya, the lawns are starting to take a beating around here too. Although all this nice weather has really helped us catch up on a lot of projects. It's been a crazy season - bad year for fungus too - red thread and leaf spot have really damaged several of our lawns pretty badly. I'll bet the ones you are talking about that are irrigated and still brown have been hit by a disease.....all the rain early in the season followed by lots of hot humid weather was the worst combination.
Luckily they will bounce back okay with some fert/rain.