Quote Originally Posted by orj
Sorry to bump the post, but if you can contribute or have any clue at all how any of the above could be fixed, please feel free to post

You never showed the important part of the error but with this one it is most likely needing to overwrite the file use.

Code:
dpkg -i --force-overwrite /var/cache/apt/archives/libxtrap6_4.3.0.dfsg.1-4_i386.deb
For these parts you need to comment out the lines in your sources.list for the people.debian and kitname ones.

Code:
W: Couldn't stat source package list http://non-us.debian.org ./ Packages (/var/lib/apt/lists/non-us.debian.org_%7ekitame_mozilla_._Packages) - stat (2 No such file or directory) 
W: Couldn't stat source package list http://people.debian.org sid/i386/ Packages (/var/lib/apt/lists/people.debian.org_%7ebranden_packages_sid_i386_Packages) - stat (2 No such file or directory) 
W: You may want to run apt-get update to correct these problems

Then you need to run apt-get update I have no clue on the pango problem.