upgrading 10.04 powerpc to 12.04.1, ntfs-3g and about 50 other packages failed to install. I managed to rescue the system by manually doing dpkg -i --force-depends /var/cache/apt/archives/blah* for all the failed packages, eventually I got it stable again. Sorry if this isn't detailed enough for you to work on the problem.
ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: ntfs-3g 1:2012.1.15AR.1-1ubuntu1.2
ProcVersionSignature: Ubuntu 3.2.0-35.55-powerpc-smp 3.2.34
Uname: Linux 3.2.0-35-powerpc-smp ppc
ApportVersion: 2.0.1-0ubuntu15.1
Architecture: powerpc
Date: Tue Jan 1 17:09:10 2013
ErrorMessage: ErrorMessage: pre-dependency problem - not installing ntfs-3g
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release powerpc (20100428)
MarkForUpload: True
SourcePackage: ntfs-3g
Title: package ntfs-3g 1:2012.1.15AR.1-1ubuntu1.2 failed to install/upgrade: ErrorMessage: pre-dependency problem - not installing ntfs-3g
UpgradeStatus: Upgraded to precise on 2013-01-01 (0 days ago)
I just had this same problem no an upgrade of two nearly identical servers from 10.04 to 12.04.2 AMD64
My Hardware is AMD64, Nvidia chipset, Root is on an md array with lvm2.
The 10.04 was full updated just prior to starting the upgrade.
During the upgrade ntfs-3g failed too install due to a pre dependency issue. The hostname failed for the same reason finally resolvconf failed to install. The update eventually failed to configure due to too many errors.
Rebooting the system failed with a error about the root filesystem being unavailable or not ready. Root was left mounter read only.
I was able to recover by the following commands;
# mount -o remount, rw /
# mount -a
#dpkg --configure -a
#apt-get install -f
Before the apt-get above apt-get refused to install ntfs-3g because hostname was not installed. hostname refused to install because libntfs-3g75 was not installable.