I've just had my SH3 replaced. I operate it in standard router mode, the only change is to the SSID name and password. Now I get an intermittent fault. I connect fine to the router, but the network will give an invalid address on any Tracert command from the router software. If I reboot the box a couple of times, it'll come back on for about 12-16 hours, and then drop off again. I spoke to the UK support centre and they switched the SH3 from router to modem mode and back and that seemed to fix it for a few days.