1. I removed the old lock file; no effect 2. I incrementally removed all icons on the desktop; no effect
3. I removed most, but not all, icons (widgets? I'm not sure about the terminology here) that are embedded in the menu-bar (which I keep at the bottom of the screen) ; no effect 4. I did notice an effect when I clicked on the plasma icon (Panel Tool Box widget?) at the lower-right-hand corner; when the additional panel-settings window was hovering above the menu-bar (panel), the plasma-desktop cpu dropped from about 90% to about 70%, and stayed there; when I exited the Panel Tool Box panel-settings window, the cpu percentage of the p-d process went back up to about 90%. Each time I restart plasma-desktop, I get quite a few error messages from X and some from plasma-desktop. Here's one that caught my eye: plasma-desktop(23604)/libplasma Plasma::isPluginVersionCompatible: unversioned plugin detected, may result in instability I have no idea what is happening with this msg. In case those messages are relevant, for context, I'll attach a file that contains one such series of messages in response to a p-d restart. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1173521 Title: plasma-desktop burning 90-100% of a cpu (after update to raring) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kde-workspace/+bug/1173521/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs