Hi SD
I can ping all around the local network with all the other PC's and Laptops ( all windows) but not from the PI not even the router that it successfully gets its DHCP from. So I think its a pi/debain issue. even with a network analyser utility where I can see it pushing out icmp packages with successfull returns from
Google and the likes but not from 192.168.1.x. masks and gateways look ok. wired ethernet pings appear ok, but with the wire disconnected and the ping forced to use the wifi interface no result. It doesnt seem to feature as a common issue on the PI forums - getting wifi to work in the first place does but not this particular problem. whilst intriguing I aint got too much more hair to pull out over it
Rick