Extracting templates from packages: 100%
Preconfiguring packages ...
(Reading database ... 141528 files and directories currently installed.)
Preparing to replace bash 4.1-2ubuntu3 (using .../bash_4.1-2ubuntu3.1_i386.deb) ...
Unpacking replacement bash ...
dpkg: error processing /var/cache/apt/archives/bash_4.1-2ubuntu3.1_i386.deb (--unpack):
trying to overwrite '/bin/sh', which is also in package dash 0:0.5.5.1-3ubuntu2
update-alternatives: using /usr/share/man/man7/bash-builtins.7.gz to provide /usr/share/man/man7/builtins.7.gz (builtins.7.gz) in auto mode.
Processing triggers for man-db ...
Errors were encountered while processing:
E: Sub-process /usr/bin/dpkg returned an error code (1)
After that I did this:
dpkg-divert --package dash --divert /bin/sh.distrib --add /bin/sh
sudo apt-get install --reinstall bash dash
sudo apt-get upgrade
Everything then upgraded correctly and myth started working again on both mds. Not sure if this really is a fix or not; but thats what happend...