Apt dependency problem

[Erik van der Meulen <e.van.der.meulen@avondel.nl>]

Dear all - I have tried to:

  apt-get update && apt-get dist-upgrade

my Debian Sid box. It went out to get approx. 98Mb of files and started
to install as expected. Because I noticed that I was running out of disk
space, I quickly removed some .deb files from /var/cashe/apt/archives. I
thought the ones with old date stamps would be safe. Unfortunately, this
did cause some error messages.
After the process finished, I figured to redo:

  apt-get update && apt-get dist-upgrade

and be okay again. Not! It results in:

  Reading Package Lists... Done
  Building Dependency Tree... Done
  Reading Package Lists... Done
  Building Dependency Tree... Done
  Calculating Upgrade... Failed
  Sorry, but the following packages have unmet dependencies:
  libsdl1.2debian: Depends: libsdl1.2debian-all (= 1.2.2-3.2) but it is
  not going to be installed or
  libsdl1.2debian-oss (= 1.2.2-3.2) but it is not going to be installed or
  libsdl1.2debian-esd (= 1.2.2-3.2) but it is not going to be installed or
  libsdl1.2debian-arts (= 1.2.2-3.2) but it is not going to be installed
  E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused
  by held packages.

Does anybody have a clue on how to fix this? Very much appreciated!

--
  Erik van der Meulen <e.van.der.meulen@avondel.nl>