Is this really something that happens regularly, to the point where you have a name for it? I've had several issues with the facebook platform in the past, but if breakage is really this common why aren't they doing anything about it? (And why not do code releases on Monday at the very least?)
This was a severe bug despite its misleading title, our users got only blank pages in IE and links did not work . It was pushed on a Thursday , then fixed some time by Monday, then next wednesday it was broken again, and a fix came a week later. [http://www.facebook.com/eggbuddies/posts/10150171378998545] Shit happens a lot more often than one would expect in facebook.
For a better treatise, read this developer's lament: