sudo blkid hangs in persistent live mode

Running Lubuntu 12.04 RC in my IBM Thinkpad T41 with a non-pae processor and 1 GB ram,

sudo blkid

hangs in persistent live mode (may finish after 10 minutes) while it works properly in volatile persistent mode. I have repeated it with several reboots.

in my hp xw8400 with xeon 64 bit processors, I have no such problem.

Extra information: there are no such problems with for example sudo fdisk -lu with any of my computers and persistent mode.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: util-linux 2.20.1-1ubuntu3
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic i686
ApportVersion: 2.0.1-0ubuntu5
Architecture: i386
CasperVersion: 1.315
Date: Tue Apr 24 11:09:41 2012
ExecutablePath: /sbin/blkid
LiveMediaBuild: Lubuntu 12.04 "Precise Pangolin" - Release i386 (20120423)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: util-linux
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.init.hwclock.save.conf: [deleted]
---
ApportVersion: 2.0.1-0ubuntu5
Architecture: i386
CasperVersion: 1.315
DistroRelease: Ubuntu 12.04
LiveMediaBuild: Lubuntu 12.04 "Precise Pangolin" - Release i386 (20120423)
Package: util-linux 2.20.1-1ubuntu3
PackageArchitecture: i386
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Tags: precise
Uname: Linux 3.2.0-23-generic i686
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
modified.conffile..etc.init.hwclock.save.conf: [deleted]