package libreoffice-core 1:3.4.4-0ubuntu2 failed to install/upgrade: subprocess new pre-installation script returned error exit status 1

[Jerry]

just upgrading on a kept back set of packages
and boom...

disk space is low, but not yet that low,
so maybe something else?
and why it was kept back?
but why publish it if it is broken?
or discovered or package conflicts
like gnome-panel or something else
causing stuff to be kept back?

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: libreoffice-core 1:3.4.4-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-8.15-generic 3.2.0
Uname: Linux 3.2.0-8-generic i686
ApportVersion: 1.90-0ubuntu1
Architecture: i386
Date: Thu Jan 12 08:51:08 2012
DuplicateSignature:
 Unpacking replacement libreoffice-math ...
 Preparing to replace libreoffice-core 1:3.4.4-0ubuntu2 (using .../libreoffice-core_1%3a3.5.0~beta2-2ubuntu2_i386.deb) ...
 rmdir: failed to remove `usr/lib/libreoffice/basis3.4/program/': Directory not empty
 dpkg: error processing /var/cache/apt/archives/libreoffice-core_1%3a3.5.0~beta2-2ubuntu2_i386.deb (--unpack):
  subprocess new pre-installation script returned error exit status 1
ErrorMessage: subprocess new pre-installation script returned error exit status 1
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
SourcePackage: libreoffice
Title: package libreoffice-core 1:3.4.4-0ubuntu2 failed to install/upgrade: subprocess new pre-installation script returned error exit status 1
UpgradeStatus: Upgraded to precise on 2011-11-25 (47 days ago)