My ISP provides two DNS servers, just now, one server is down, which caused all Apple notebooks cannot surf net as the server is listed as first DNS server, Windows PC seems not affected. After I manually swamp the server sequence, it works again. I called ISP but they said it's Apple's problem, though they'll get both DNS servers up, they cannot guarantee when it can be done, as there is still one DNS server available hence service is not affected. So I want to know whether Mac OS is able to do round-robin lookup for DNS servers? If yes, any special settings I need to do? Thanks a lot.