I have tried to upgrade to UCS 4.1-2 on two of three servers I have and the upgrade fails on both. Here is the error listed in the upgrade.log:
Reading package lists...
Building dependency tree...
Reading state information...
The following packages have unmet dependencies:
udev : Breaks: plymouth (< 0.9.0-7) but 0.8.5.1-5.17.201512031309 is to be installed
E: Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.
Error: Failed to execute "apt-get -o DPkg::Options::=--force-confold -o DPkg::Options::=--force-overwrite -o DPkg::Options::=--force-overwrite-dir --trivial-only=no --assume-yes --quiet=1 -u dist-upgrade
Anyone have any ideas?