I am experiencing the same issue. I have the latest KDE/natty installs, and I believe this 100% CPU saturation was triggered, when I was moving between folders in Thunderbird 3.10, thunderbird had hung. Yup, sure enough I just killed thunderbird, and dbus-daemon is no longer at 100% CPU utilization. After starting thunderbird the dbus-daemon process goes back to 100% CPU utilization. I have tried this 3 times, and the starting/running of thunderbird is clearly related to the 100 CPU utilization of the dbus-daemon process. I'm going to reboot the system now, and I will update this bug report when the system comes back up.
Here is the output from top: Tasks: 175 total, 3 running, 172 sleeping, 0 stopped, 0 zombie Cpu(s): 36.3%us, 19.0%sy, 0.8%ni, 43.9%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 4115008k total, 3981604k used, 133404k free, 195052k buffers Swap: 9933820k total, 88628k used, 9845192k free, 1892864k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 32191 rclark 20 0 30076 27m 988 R 100 0.7 3133:53 dbus-daemon 32046 root 20 0 285m 241m 35m S 4 6.0 133:28.81 Xorg 32268 rclark 20 0 417m 87m 38m S 2 2.2 95:24.72 kwin 32286 rclark 20 0 334m 60m 24m S 2 1.5 9:43.30 plasma-desktop 32283 rclark 20 0 298m 34m 12m R 2 0.9 323:37.38 knotify4 13884 rclark 25 5 201m 72m 19m S 1 1.8 150:21.93 chromium-browse 18329 rclark 20 0 535m 20m 13m S 1 0.5 80:53.04 gnome-system-mo 13840 rclark 20 0 644m 127m 33m S 0 3.2 17:13.71 chromium-browse 13871 rclark 20 0 182m 60m 18m S 0 1.5 7:58.63 chromium-browse 13951 rclark 20 0 300m 36m 19m S 0 0.9 66:17.23 chromium-browse 14034 rclark 20 0 1129m 306m 32m S 0 7.6 29:07.21 firefox-bin -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/779849 Title: dbus-daemon consumes 100% CPU -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs