Comment 7 for bug 205079

Just to follow up on this, the following is in the terminal but doesn't seem to be in main.log:

Removing xbiff ...
Removing xcalc ...
Removing xclipboard ...
Removing xclock ...
Removing xconsole ...
(Reading database ... 154624 files and directories currently installed.)
Preparing to replace libc6-dev 2.6.1-1ubuntu10 (using .../libc6-dev_2.7-9ubuntu2_i386.deb) ...
Unpacking replacement libc6-dev ...
Preparing to replace libc6 2.6.1-1ubuntu10 (using .../libc6_2.7-9ubuntu2_i386.deb) ...
Unpacking replacement libc6 ...
Setting up libc6 (2.7-9ubuntu2) ...
Installing new version of config file /etc/init.d/glibc.sh
Installing new version of config file /etc/gai.conf ...
*** stack smashing detected ***: /usr/bin/perl terminated
dpkg : error processing libc6 (--configure):
 subprocess post-installation script killed by signal (Segmentation fault), core dumped
Errors were encountered while processing:
 libc6
dpkg: regarding .../libc6-i686_2.7-9ubuntu2_i386.deb containing libc6-i686, pre-dependency problem:
 libc6-i686 pre-depends on libc6 (= 2.7-9ubuntu2)
  libc6 latest configured version is 2.6.1-1ubuntu10.
dpkg: error processing /var/cache/apt/archives/libc6-i686_2.7-9ubuntu2_i386.deb (--unpack):
 pre-dependency problem - not installing libc6-i686

That "*** stack smashing detected ***: /usr/bin/perl terminated line" is quite disconcerting.
Also, I recently did an apt-get upgrade which had two instances of the following lines:

Processing triggers for libc6 ...
ldconfig deferred processing now taking place