okay so I've just got home and have tried giving my N9 a static IP, as well as manually configuring the DNS server.

Unfortunately no luck

Ive tried all forms of encryption available on my Billion router and even without any security at all...

i have also reproduced this issue on a Netgear router this afternoon as well. (although it was set to "n" so i will try again tomorrow and ask the owner to change it to g/n)

Sigh, my n9 is actually giving me the "somethings wrong.." error message as i type this. guess ill have to keep praying to the Finnish gods that ill one day see a fix.