Confirmed by two more reports.
One upstream: https://bugs.kde.org/show_bug.cgi?id=192910, closed as invalid
with comment
"Sorry but this bug is your Distro fault Ubuntu.
Ubuntu ships experimental stuff as stable, your backend cannot deal with all
.deb packages that's why KPackageKit says it failed
** Package changed: kpackagekit (Ubuntu) => packagekit (Ubuntu)
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KPackageKit doesn't install virtualbox nor acrobat reader
https://bugs.launchpad.net/bugs/369081
You received this bug notification because you are a member of Kubuntu
Bugs, which is subscribed to kpackagekit in ubuntu.
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kubun
