Evangelos Foutras:

I'd say in initscripts, because before that only the kernel prints messages. When initscripts kicks in, its output gets combined with the kernel messages and creates a visually unappealing result. :p

You should also be aware of this development: http://karelzak.blogspot.com/2011/07/dmesg1-changes-for-util-linux-220.html there are new features in dmesg that'll help you filter out (or in) needed information. -- дамјан