libc6 broken - Can't install any apps - Hardy 8.04

[Rick Knight]

I upgraded from 7.10 to 8.04 a week or so ago and everything went OK. My 
PC has been running fine since. Today I wanted to install EncFS, but 
apt-get failed with these messages...

sudo apt-get install encfs
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run `apt-get -f install' to correct these:
The following packages have unmet dependencies:
 encfs: Depends: librlog1c2a but it is not going to be installed
 libc6-i686: PreDepends: libc6 (= 2.7-10ubuntu3) but 2.7-10ubuntu4 is to 
be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or 
specify a solution).

Running apt-get -f install yields this...

sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer 
required:
 libwvstreams4.3-extras liblaunchpad-integration0 libmtp6 libneon26
 xserver-xorg-video-amd libsnmp10 g++-4.1 libhal-storage-dev libdns32
 libcamel1.2-10 libxalan110 libsoup2.2-8 libgpod2 libgnome-menu2 
libnss3-dev
 libcdio6 libstdc++6-4.1-dev libsvg1 libgutenprintui2-1 ecj 
libpt-plugins-v4l
 libbrlapi1 libwvstreams4.3-base libiso9660-4 libhal-dev libsvnqt3
 libpt-plugins-alsa libdb4.5 libtotem-plparser7 libuniconf4.3 libytnef0
 libxerces27 libnss3-0d libkdcraw1 libntfs-3g16 libpisync0
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
 libc6-i686
The following packages will be upgraded:
 libc6-i686
1 upgraded, 0 newly installed, 0 to remove and 37 not upgraded.
8 not fully installed or removed.
Need to get 0B/1243kB of archives.
After this operation, 0B of additional disk space will be used.
Do you want to continue [Y/n]? y
*** stack smashing detected ***: /usr/bin/perl terminated
Segmentation fault
Setting up libc6 (2.7-10ubuntu4) ...
*** stack smashing detected ***: /usr/bin/perl terminated
dpkg: error processing libc6 (--configure):
subprocess post-installation script killed by signal (Segmentation fault)
Errors were encountered while processing:
libc6
E: Sub-process /usr/bin/dpkg returned an error code (1)

So, I opened Adept Package Manager to try to install EncFS. Selected 
encfs and then looked in Preview Changes and found that libc6-i686 is 
listed as...
libc6-i686        BROKEN (upgradable)         upgrade

Because of the broken libc6-i686 I am unable to install encfs. How can I 
fix this?

Thanks,
Rick