Well, count me as one of the users that had absolutely no problem with this upgrade. All went smooth. I was a bit concerned after reading the couple posts where people said they had problems, so I made sure to back-up my settings using "Save a copy as..." under the File menu before upgrading the firmware to 7.2.1. Fortunately, after a quick download and then upload of the firmware to the base station, the device restarted on its own and all was working fine. I've used the Belkin Pre-N AP in the past... this Apple device is much more stable and works without a hitch.