So, I had most of the same issues you guys have been having here. I have since re-installed vim and got to another point in the game. At this stage, I can't connect to the archive.ubuntu.com sources from my installation. It always seems to time out. In any case, I get the following error..
The following packages have unmet dependencies:
pluto-dcerouter: PreDepends: mythtv-backend but it is not going to be installed
PreDepends: mythtv-backend but it is not going to be installed
E: Broken packages
I've gone and downloaded the packages.gz that the installer is looking for, anyone know where I would place those files in order for the LMCE installer to see them and move on? I'm a bit new to ubuntu, and if I'm asking something obvious, please forgive me..