I encountered similar issue during samba-common update when I was prompted for what to do with smb.conf.
I chose the same side-by-side comparison as kmulder, clicked Continue and got exactly same behavior. Process tree is same regarding qaptworker. My Ubuntu release and muon version are also the same, uname says version is 3.0.0-16-generic #29-Ubuntu SMP Tue Feb 14 12:49:42 UTC 2012 i686 athlon i386 GNU/Linux -- You received this bug notification because you are a member of Kubuntu Bugs, which is subscribed to muon in Ubuntu. https://bugs.launchpad.net/bugs/980785 Title: Muon Software Updates hangs after side-by-side request To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/muon/+bug/980785/+subscriptions -- kubuntu-bugs mailing list kubuntu-b...@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs