Upgrade fails when performed via terminal

Binary package hint: udev

Checking for a new ubuntu release
Get:1 Upgrade tool signature [198 B]
Get:2 Upgrade tool [1307 kB]
Fetched 1307 kB in 0s (0 B/s)
extracting 'natty.tar.gz'
authenticate 'natty.tar.gz' against 'natty.tar.gz.gpg'

Processing triggers for install-info ...
Processing triggers for ureadahead ...
Errors were encountered while processing:
 /var/cache/apt/archives/udev_167-0ubuntu3_i386.deb
Exception during pm.DoInstall(): E:Sub-process /usr/bin/dpkg returned an error code (1)

*** The package "udev" failed to install or upgrade.

You can help the developers to fix the package by reporting the problem.

ProblemType: Package
DistroRelease: Ubuntu 10.10
Package: udev 162-2.2
ProcVersionSignature: Ubuntu 2.6.32-31.61-generic 2.6.32.32+drm33.14
Uname: Linux 2.6.32-31-generic i686
Architecture: i386
CustomUdevRuleFiles: README.dpkg-new 45-libmtp7.rules
Date: Sun May 1 16:18:31 2011
ErrorMessage: ErrorMessage: subprocess new pre-installation script returned error exit status 2
MachineType: Dell Computer Corporation OptiPlex GX270
ProcKernelCmdLine: root=UUID=f815070f-34da-43ea-9253-469d6c453855 ro quiet splash
SourcePackage: udev
Title: package udev 162-2.2 failed to install/upgrade: ErrorMessage: subprocess new pre-installation script returned error exit status 2
UdevDb: Error: [Errno 2] No such file or directory
UdevLog:

dmi.bios.date: 05/17/2004
dmi.bios.vendor: Dell Computer Corporation
dmi.bios.version: A04
dmi.board.name: 0Y1057
dmi.board.vendor: Dell Computer Corp.
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Computer Corporation
dmi.modalias: dmi:bvnDellComputerCorporation:bvrA04:bd05/17/2004:svnDellComputerCorporation:pnOptiPlexGX270:pvr:rvnDellComputerCorp.:rn0Y1057:rvr:cvnDellComputerCorporation:ct6:cvr:
dmi.product.name: OptiPlex GX270
dmi.sys.vendor: Dell Computer Corporation