Comment 25 for bug 346246

Thank you Jonathan. That comment implies that Kubuntu has update-notifier-kde and therefore that Kubuntu is not affected, only other distros (specifically, those that do not include update-notifier-kde by default). However, Kubuntu is in fact affected, and aptitude shows me that it is not installed by default:

$ aptitude show update-notifier-kde
Package: update-notifier-kde
State: installed
Automatically installed: no
Version: 0.19
Priority: optional

If update-notifier-kde is installed by default, would that solve this issue? If so, then that looks like an easy fix to me.