I have a Buffalo WHR-G300N V2 and most of the time, when I try to connect with my Macbook or iMac, I get the following message in a window:
"To view this page, you must log in to area “AirStation” on 192.168.11.1:80."
followed by (if I enter nothing):
"AUTHORIZATION ERROR
CAUTION
1.The user name is "root".
2.Check uppercase or lowercase in the password."
or followed by a wizard that shows up when entering "root" as username and the wizard then tells me there's a problem with my internet connection cable.
Funnily enough, this *NEVER* happens with Windows 7 PC's connecting to the same WLAN!
BTW, we have 2 Buffalo routers (one downstairs and one upstairs) and the same thing happens with both, so it seems to be a Mac<->Buffalo router problem, and not a broken router.
Furthermore, I must stress out that this problem only happens since some time, it wasn't the case a few months ago.