With recent kernels & udev + initscripts I started having warm boot
problems with one of my desktops. Fully updated testing repo (3.6.2).
Cold boot works fine.
The boot console looks very similar to these:
https://bbs.archlinux.org/viewtopic.php?id=142052
http://serverfault.com/questions/394721/strange-boot-behaviour
Today I switched that pc to systemd - and the problem has gone away.
I cannot tell if it was udev timout bug - but booting with systemd
did make the issue vanish.
In case anyone else has this.
gene