Ok, was just wondering if this was a repeatable result. Haven't spent enough time to test this properly, but I do get results months after WPS bug coming-out, so unlikely all routers do firmware update seamlessly. If that was the case would expect zero results by now. The repeating of same PIN try for me in few routers was just a single argument fix, which is why I am assuming this can also impact results. Add to that possibility to use 2 N900s to lower the crack-time to 2h (maybe 4 for 1h? would need some bluetooth/wifi syncing of results and quite some development time/investment... or maybe just recompile code in one to count downwards? worth a think) and WPS is the new WEP (in some places I still get 6 WPS enabled networks for 8 appearing, wild wepst all around). As this is WPS or never (WPA) all results (even negative) are welcome