hangs during boot at fsck

[stop]

boot gets stuck at fsck of /dev/md0
I waited for a really long time just to be sure... I hear no hard disk activity...

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: upstart 1.4-0ubuntu8
ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.94-0ubuntu1
Architecture: amd64
Date: Fri Mar 2 20:38:57 2012
EcryptfsInUse: Yes
ProcEnviron:
 LANGUAGE=en_US:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: upstart
UpgradeStatus: Upgraded to precise on 2012-03-01 (0 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Robin Kluth (commifreak)]

Hi,

maybe I'm affected, too:

My Ubuntu Server 12.04.1 hangs on EVERY boot at:

==============================

fsck from util-linux 2.20.1
fsck from util-linux 2.20.1
fsck from util-linux 2.20.1
/dev/mapper/VG1-LV--System: clean
/dev/md0: clean
/dev/mapper/VG1-LV--Data: clean

==============================

for about 2-3 minutes.

I cant figure out whats wrong - no errors on syslog, no hard drive action - nothing :(

[Robin Kluth (commifreak)]

I've just noticed, that the hang came with 3.2.0-31 (upgrading from -29 which makes no problems during boot). - Whats changed there to bring the system to freeze?