I'm not sure whether to be impressed or terrified that Google can -- and, apparently, does -- roll out updates across their entire server farm in a matter of a minute or two.
"Since we push these updates in a staggered and rolling fashion, the errors began appearing between 6:27 a.m. and 6:40 a.m. and began disappearing between 7:10 and 7:25 a.m., so the duration of the problem for any particular user was approximately 40 minutes." from http://googleblog.blogspot.com/2009/01/this-site-may-harm-yo...
