A problem is that it might not be possible to disable WPS on some routers yet, for example Linksys routers: http://superuser.com/questions/374624/how-do-i-configure-my-...

Anyone from Cisco know? Or have the equipment/effort able to verify this claim: That "Manual" switch only affects the GUI, if you look at the beacon (with some WiFi Analyzer) you will notice that WPS is still enabled.