One of the error screen shots on gizmodo showed an NSAPI plug-in error message on the AT&T site. NSAPI is old s*&t (netscapes iplanet web server). That under load and a not perfectly configured load balancer that is properly sticking sessions to servers can result in session corruption where you get another users session and hence see their info. If I were a betting man, that's what I'd attribute it to.
6/16/10 at 6:27am