Huuumm Thanks, At home i'm use Belkin 11b/g/n with WPA2 my n900 worked. At my friend home#1, he use Linksys(Cissco) 11g/n with WPA2 my N900 Worked. At my friend home#2, he use D-link 11b/g/n with WPA2 my N900 Worked. At my Office, use Cisco Aironet 1100 Series 11g with WPA2 my N900 NOT Worked. At My Office!!? - All iPhone worked. - All Android Samsung,Moto worked. - All Nokia Symbian and Maemo NOT worked. I'm boring when iPhone asked me .. "Why Nokia Not Worked?" i'm posted this on Nokia discussion and maemo but ... How i can !?