Segfault after dist-upgrade

[Anne Forker <anne_forker@yahoo.de>]

Hi all,

I have tried to update squeeze to the next 'unstable' dist and thereby turned it into a non-functioning state:

[...]
Reading changelogs... Done
Extracting templates from packages: 100%
Preconfiguring packages ...
Setting up libc6 (2.17-7) ...

Configuration file `/etc/ld.so.conf.d/i486-linux-gnu.conf'
 ==> File on system created by you or by a script.
 ==> File also in package provided by package maintainer.
   What would you like to do about it ?  Your options are:
    Y or I  : install the package maintainer's version
    N or O  : keep your currently-installed version
      D     : show the differences between the versions
      Z     : start a shell to examine the situation
 The default action is to keep your current version.
*** i486-linux-gnu.conf (Y/I/N/O/D/Z) [default=N] ? y
Installing new version of config file /etc/ld.so.conf.d/i486-linux-gnu.conf ...
Checking for services that may need to be restarted...
Checking init scripts...
WARNING: init script for openbsd-inetd not found.

Restarting services possibly affected by the upgrade:
  exim4: restarting...done.
  cups: restarting...done.
  cron: restarting...done.
  atd: restarting...done.

Services restarted successfully.
E: Problem executing scripts DPkg::Post-Invoke 'test -f /var/run/science-config.usermenu && if [ -x /usr/sbin/blend-update-usermenus ] ; then /usr/sbin/blend-update-usermenus science ; fi ; rm -f /var/run/science-config.usermenu'
E: Sub-process returned an error code
E: Sub-process /usr/bin/dpkg received a segmentation fault.
root@hrefna:~# apt-get -f dist-upgrade
Segmentation fault
root@hrefna:~# ls
Segmentation fault
root@hrefna:~# 

I have had this post-invoke test error before when I executed apt-get -f dist-upgrade with some libs preloaded (I moved the libc6.so following http://blog.i-al.net/2013/03/a-copy-of-the-c-library-was-found-in-an-unexpected-directory/). However I hoped to get around it.

I'd like to know whether this error appeared on my behalf ... 

Suppose, I won't be able to restart the computer when it's shut down ...

Best regards
Anne