Scenario a) one of the plasmoids you tried caused the plasma crash and caused a broken applets configuration file scenario b) plasma crashed because of a broken applets configuration file caused by one of the plasmoids scenario c) you just removed you bottom panel and then plasma crashed because it was feeling like it and because it was updated earlier on and didn't get restarted (which is most likely the case IMO)
Eitherway it is difficult to reproduce why the crash happened and why your bottom panel disappeared, however we might be able to track the latter down run: cp ~/.kde4/share/config/plasma-appletsrc ~/plasma-appletsrc You will find the file plasma-appletsrc in your home directory, please attach it to this bug to fix the issue: rm ~/.kde4/share/config/plasma-appletsrc I am marking the bug as invalid since technically this crash was most likely a one-time-update-crash(tm) ** Changed in: kdebase-kde4 (Ubuntu) Status: Incomplete => Invalid -- Plasma crash https://bugs.launchpad.net/bugs/202832 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs