WARNING: at /build/buildd/linux-2.6.35/ubuntu/aufs/plink.c:332 au_plink_append 0x274/0x2e0 [aufs]()

Kernel oups while apt-get upgrade in maverick daily build 2010.09.09.
Steps to reproduce:
1. using virtualbox-ose on ubuntu 10.04 as as host, start maverick: ubuntu-desktop-i386.iso (daily-live/20100909)
2. try ubuntu without installation / english
3. root@ubuntu:~# apt-get update
4. dpkg -l > pre.txt
5. root@ubuntu:~# apt-get upgrade
just after downloading new packages, you will see the crash icon in tray.
6. dpkg -l > post.txt

See $(diff pre.txt post.txt) from attachment to find packages which may did that.
My guess it this may be one of apt-* but not sure.

from dmesg:
ubuntu@ubuntu:~$ dmesg | tail -19
[ 313.375951] Pid: 2776, comm: dpkg Not tainted 2.6.35-20-generic #29-Ubuntu
[ 313.375989] Call Trace:
[ 313.380060] [<c014ac52>] warn_slowpath_common+0x72/0xa0
[ 313.380619] [<f831f494>] ? au_plink_append+0x274/0x2e0 [aufs]
[ 313.380674] [<f831f494>] ? au_plink_append+0x274/0x2e0 [aufs]
[ 313.380722] [<c014ad23>] warn_slowpath_fmt+0x33/0x40
[ 313.380774] [<f831f494>] au_plink_append+0x274/0x2e0 [aufs]
[ 313.380829] [<f832a2ea>] au_cpup_or_link+0x10a/0x230 [aufs]
[ 313.380882] [<f832ac88>] aufs_link+0x158/0x4a0 [aufs]
[ 313.380943] [<c0303a7d>] ? security_inode_permission+0x1d/0x30
[ 313.380996] [<f8328427>] ? h_permission+0x97/0x120 [aufs]
[ 313.381051] [<c02226cd>] vfs_link+0xed/0x160
[ 313.381098] [<c0225007>] sys_linkat+0x117/0x120
[ 313.381145] [<c02306ff>] ? mntput_no_expire+0x1f/0xd0
[ 313.381191] [<c02221f5>] ? path_put+0x25/0x30
[ 313.381238] [<c023b158>] ? do_utimes+0x98/0xe0
[ 313.381283] [<c0225045>] sys_link+0x35/0x40
[ 313.381337] [<c05c8c04>] syscall_call+0x7/0xb
[ 313.381366] ---[ end trace 9576a44ca0781ade ]---

ProblemType: KernelOops
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-20-generic 2.6.35-20.29
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-20.29-generic 2.6.35.4
Uname: Linux 2.6.35-20-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Annotation: Your system might become unstable now and might need to be restarted.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: I82801AAICH [Intel 82801AA-ICH], device 0: Intel ICH [Intel 82801AA-ICH]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: i386
AudioDevicesInUse:
 Cannot stat file /proc/2435/fd/43: Stale NFS file handle
                      USER PID ACCESS COMMAND
 /dev/snd/controlC0: ubuntu 2441 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'I82801AAICH'/'Intel 82801AA-ICH with STAC9700,83,84 at irq 5'
   Mixer name : 'SigmaTel STAC9700,83,84'
   Components : 'AC97a:83847600'
   Controls : 34
   Simple ctrls : 24
Date: Thu Sep 9 21:42:59 2010
Failure: oops
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
LiveMediaBuild: Ubuntu 10.10 "Maverick Meerkat" - Alpha i386 (20100909)
Lsusb:
 Bus 001 Device 002: ID 80ee:0021
 Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: innotek GmbH VirtualBox
ProcCmdLine: file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash --
RelatedPackageVersions: linux-firmware 1.38
RfKill:

SourcePackage: linux
Title: WARNING: at /build/buildd/linux-2.6.35/ubuntu/aufs/plink.c:332 au_plink_append+0x274/0x2e0 [aufs]()
dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH