Unable to update/upgrade 6.7.1 after HD install

[Gondarc]

Adding the file /etc/apt/apt.conf.d/11Immediate-Configure had no effect on a "sudo apt-get -f install" command which reported nothing wrong. I left the file in situ and ran "sudo apt-get upgrade" which updated 172 packages, including some but not all of Libre Office, but kept back 86 packages (including the rest of Libre Office):

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages have been kept back:
  cpp cpp-4.6 ffmpeg gcc gcc-4.6 gcc-4.6-base gdisk gnome-mplayer grub
  icedtea6-plugin libao-common libavcodec53 libavdevice53 libavfilter2
  libavformat53 libavutil51 libcairo-perl libgail-common libgail18 libgcc1
  libgfortran3 libglib-perl libglib2.0-0 libgnome2-canvas-perl libgnome2-perl
  libgnome2-vfs-perl libgomp1 libgpod-common libgpod4 libgstfarsight0.10-0
  libgtk2-perl libgtk2.0-0 libgtk2.0-bin liblocale-gettext-perl libmpc2
  libpango-perl libpostproc52 libpulse0 libpurple0 libquadmath0 libreadline5
  libreadline6 libreoffice-base libreoffice-base-core libreoffice-calc
  libreoffice-core libreoffice-draw libreoffice-filter-binfilter
  libreoffice-gnome libreoffice-gtk libreoffice-impress libreoffice-math
  libreoffice-writer libsnmp15 libstdc++6 libswscale2 libtext-charwidth-perl
  libtext-iconv-perl mplayer network-manager network-manager-gnome
  network-manager-openvpn network-manager-openvpn-gnome network-manager-pptp
  network-manager-pptp-gnome network-manager-vpnc network-manager-vpnc-gnome
  openjdk-6-jre openjdk-6-jre-headless perl perl-base perl-modules pidgin
  policykit-1-gnome python python-minimal python-uno samba-common smbclient
  ttf-opensymbol usb-modeswitch usb-modeswitch-data vim vim-common vim-runtime
  vim-tiny
0 upgraded, 0 newly installed, 0 to remove and 86 not upgraded.

Synaptic still wants to remove packages wholesale in order to upgrade the rest, where apt-get just holds them back ... where do I find out why apt-get is holding these back?

Also, if I try to install the Libre Office British English package, Synaptic still wants to remove things wholesale, including compiz-configuration-manager, gimp, kompozer, adriane (various), bluetooth (various), cpp (various), gnome (various) et al; where apt-get just reports:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 python-pyatspi : Depends: python-pyorbit but it is not going to be installed
                  Depends: python-gnome2 but it is not going to be installed
E: Broken packages

which is puzzling, because all three python packages are installed and apparently at the latest version.

Hmmm!