As far as publicity stunts go this has to be one of the stupidest I have ever seen. Firefox's record breaking attempt knocked out their promotional web site spreadfirefox.com and reduced their customer's download speed to sub dial up.
Maybe the publicity will end up in a few more downloads of Firefox, maybe even they will get into the Guinness Book of Records. One thing is for sure they have demonstrated that a denial of service attack works very effectively.
Firefox is a great product but if there is one thing Polybore hates more than promotional hype, it's slow download speeds.
Any power companies out there want to try and get a world record for peak demand of electricity? If so just get your all your customers to switch on all their domestic electrical appliences at the same time and watch those sub stations blow.