I had this problem today. For me, Dolphin was also taking 100% CPU. I killed the 3 processes, and the problem is gone (without having to log out and back in).
Last week I had a similar problem, when I put a USB stick in the computer and it started going unusably slow. I had to kill many kde processes, knotify, dolphin, and dbus daemon, and (since I killed plasma-desktop) log back in to fix it. The USB stick does not cause this problem today (but also the device notifier doesn't detect it today, but I can mount it from the command line). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/768714 Title: kded4 and knotify4 eats 100% cpu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kde4libs/+bug/768714/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs