I was wondering what sort of wireless performance I should be getting from my Time Capsule? When it is sitting next to my iMac the rate reported by the Airprt utility is 172. And the network works very fast. But the rate drops down to 52-70 when I shifted the TC just two rooms ways (20m away, through 2 walls, (plaster board). This is matched with very poor performance of devices attacked to the TC's USB (slooooow opening files on an attached HDD and slooow printing to an attached printer) as well as noticable fall in internet speed. The iMac will also not connect to time capsule when in the other room if the network (time-capsule) is set to 802.11n only. I've tried changing channel;s etc with not effect. (By they way the TC is in bridge mode and is connected by a 10 metre cat 6 cable to a ADSL modem/router provided by the ISP). Am I doing something wrong? Is this standard?