Just installed an 851 at two locations using SDM express, no real features needed but these locations have quite a few computers on the network and the consumer grade routers they've been using were locking up quite regularly.
Upgrade to the new 851 went flawless, with the first company just using SDM express setup. Now the second company, which uses the same ISP was not so flawless. After setting the unit up the internet was very slow, almost dialup speeds. I'm using 10% cpu and 38% memory - any ideas?