It actually seems to have made mine work properly at last. Only took six months for them to get it working as advertised...Halleluia!
I'm having trouble with my USB attached HD. It had been working fine as long as I power on the drive, then power on the AEBS. None of my computers are able to connect to the HD with the 7.2.1 firmware at present. Apparently over at the Apple forums some people are having the same problems.
I'm still testing some things out though. YMMV
I resolved this problem on my system by trashing the AirPort Utility Preferences at
Hopefully that helps you out.
So did it fix the airport-freeze-forcing-reboot-thing when transfering large files to an attached usb-drive?
Every time I tried to connect to my USB drive, it would blow my internet connection, park a prefs file full of unicode in my Library and I'd have to fiddle with it for ages to get the drive, printers and network all running at once. Now it connects instantly and painlessly.What was not properly for you?