1. rpm -e --nodeps --justdb libbinutils2
error: "libbinutils2" specifies multiple packages2.apt-get --fix-broken build-dep libbinutils2
Reading Package Lists... Done
Building Dependency Tree... Done
W: There are multiple versions of "libbinutils2" in your system.
This package won't be cleanly updated, unless you leave
only one version. To leave multiple versions installed,
you may remove that warning by setting the following
option in your configuration file:
RPM::Allow-Duplicated { "^libbinutils2$"; };
To disable these warnings completely set:
RPM::Allow-Duplicated-Warning "false";
W: You may want to run apt-get update to correct these problems
E: You must put some 'source' URIs in your sources.list3. apt-get --reinstall --fix-broken install libbinutils2
(same as above...)4. apt-get --fix-broken remove libbinutils2
Reading Package Lists... Done
Building Dependency Tree... Done
Selecting libbinutils2#2.19.51.0.2-3pclos2010 for 'libbinutils2'
The following packages will be REMOVED:
a2ps amule basesystem binutils dkms dkms-fglrx dkms-nvidia-current dkms-psb dkms-r8192se
dkms-sn9c20x dkms-virtualbox gcc kernel-2.6.33.7-pclos4.pae
kernel-devel-2.6.33.7-pclos4.pae libbinutils2#2.19.51.0.2-3pclos2010 ndiswrapper
ndiswrapper-airforceone ndiswrapper-airplus ndiswrapper-lstinds ndiswrapper-net8185
ndiswrapper-netathw ndiswrapper-netma521 ndiswrapper-netr33x ndiswrapper-prismnic
ndiswrapper-wlannic ndiswrapper-wlipnds printerdrake task-printing task-printing-scanning
virtualbox
WARNING: The following essential packages will be removed
This should NOT be done unless you know exactly what you are doing!
basesystem kernel-2.6.33.7-pclos4.pae (due to basesystem)
0 upgraded, 0 newly installed, 30 removed and 0 not upgraded.
Need to get 0B of archives.
After unpacking 181MB disk space will be freed.
You are about to do something potentially harmful
To continue type in the phrase 'Yes, do as I say!'Hardly a surprise that I say 'no' to this... call me chicken, see if I care...

5. If you have libbinutils2-2.19.51.0.2-3pclos2010.i586.rpm in you /etc/cache/apt/archives, cd into that directory. Otherwise use a web browser to download it from a mirror and cd into the directory where you put it. Then:
rpm -U --replacepkgs --nodeps --justdb libbinutils2-2.19.51.0.2-3pclos2010.i586.rpm
I shall try this tomorrow, when I have less fermented beverage in my system. (Not that there is any realistic assumption on that point, as I have my parents visiting from the old country this week, a rare occasion worthy of a pitcher of mjød or two!)
6. If all else fails, back up all data and settings, bite the bullet, and re-install! It's probably quicker than messing around and breaking things further.
or 7. Ignore the problem and hope it goes away (or deal with it when it breaks the system and forces me to reinstall anyhow)... not my favourite, but...
It really gets to me that there seems to be no cause, just a symptom... normally, it's easy to treat a symptom, but in this case... oh well...
Thank you both for your suggestions, much appreciated. Any more, keep them coming (I shall still try no. 5 tomorrow on a clearer head).
Cheers!
CJ