I'm seeing something similar on Gutsy (AMD64) with only 4 local users. CPU usage goes to 100% as soon as I select another user from the list.
strace shows the following when I try the user switch: sendto(19, "FLEXI_XSERVER_USER ozlem\n", 25, MSG_NOSIGNAL, NULL, 0) = 25 ioctl(3, FIONREAD, [0]) = 0 poll([{fd=4, events=POLLIN}, {fd=3, events=POLLIN}, {fd=8, events=POLLIN|POLLPRI}, {fd=10, events=POLLIN|POLLPRI}, {fd=11, events=POLLIN|POLLPRI}, {fd=12, events=POLLIN|POLLPRI}, {fd=14, events=POLLIN|POLLPRI}, {fd=13, events=POLLIN|POLLPRI}, {fd=16, events=POLLIN|POLLPRI}, {fd=15, events=POLLIN|POLLPRI}, {fd=18, events=POLLIN}, {fd=17, events=POLLIN|POLLPRI}], 12, 0) = 0 read(19, 0x7fff4f646c9f, 1) = -1 EAGAIN (Resource temporarily unavailable) Is the \n supposed to be there with the user name in the call to FLEXI_XSERVER_USER? -- Fast user switch applet causes high processor load https://bugs.launchpad.net/bugs/84226 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs