I've tried enabling the usage meter but it just doesn't track usage. I've noticed it won't keep the correct time either. I'm running the latest firmware as far as I can tell from Netgear's site.
As far as the time thing, right above MAINTANCE it says E-MAIL click that. Then go to the bottom and change the time zone. Then click APPLY. It'll take a minute but after that it should have the right time and your traffic meter should be working. Anytime the time goes out of whack just do what I psoted.
Just tried your suggestion. Didn't work. Reports the date is Current Time: Wednesday, 01 Jan 2003 00:00:07 and when I refresh it reports the same date but the time has advanced slightly. It did default back to Pacific time however. I need Central time. At one time I found something thru Google that said it could not reach a time server.