Way too slow scanning drive

[Darxus]

Ran overnight, 9 hours, looks like it has scanned 7 of my backup directories and is working on the 8th. There are 44.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: baobab 3.2.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-17.30-generic 3.0.22
Uname: Linux 3.0.0-17-generic x86_64
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Sat Apr 21 11:20:10 2012
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-utils
UpgradeStatus: Upgraded to oneiric on 2012-03-10 (42 days ago)

[Darxus (darxus)]

I rebooted to make sure caches were cleared.

# /usr/bin/time du dancer-2011-03-01 panic-2011-03-01 panic-2012-01-01 dancer-2010-12-01 panic-2011-02-01 panic-2010-11-29 panic-2012-02-01 > du.out
9.32user 32.55system 7:52.79elapsed 8%CPU (0avgtext+0avgdata 1577136maxresident)k

So it takes 8 minutes to read 7 of the same 8 directories (I typoed one of them and don't know what it was) with du, and less than a second to load them with xdiskusage with "xdiskusage du.out".

[Launchpad Janitor (janitor)]

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

[cogwheel (maorlando)]

I'm having the same experience on Arch, but only for NTFS volumes. ext4 works fine.