Today, I got the much discussed 'White Screen' for Brainking for the first time. I was in a restaurant, using my iPad. Here is the interesting part: I took out my iPhone, and - using the same wireless access point - it worked! I could do some moves on the iPhone, and during that time, the iPad still gave me white screens. I then tried to clear the cache, reload the page, close the page, the browser, reboot the iPad; nothing helped. I finally killed the browser, and then it worked.

From my (limited!) understanding for how web servers communicate with browsers, it looks like the browser is using a session ID that the Brainking server is no longer accepting (for whatever reason), and Brainking is not telling the browser, so the browser doesn't know it and keeps using it. maybe somebody with more knowledge can enlighten us.
I think it is definitely useful to know now that it is not your location, network, router, DNS server, etc., as two devices coming through the same access point can have different behavior.