Nokia N96 web: No gateway reply when browsing via WLAN

I've been getting problems for the last week or more with my Nokia N96 refusing to connect to either of 2 wireless accesspoints at home, yet
a) It worked fine at work using WPA2-EAP TLS
b) It worked fine via my FON "public" network

After some reading through many suggests of randomly changing parameters, recreating APs on the device I finally read a post where someone had hardcoded IP address/DNS to get the phone working again.

That got me thinking. Both my home APs use bridged networking to join the subnet managed by my main router. When connecting to FON it's a seperate subnet.

So I went to my router (585v7) and deleted the cached entry for my N96. This would clear up any DHCP leases etc that may be setup.

Having done this I could immediately connect to my home lan just fine and happily browse

Hoorah!