Hi, in kde 3.2 beta 2, it happens often to me, that suddenly my cpu load goes up to 100 %, and only the X server, kded and kwin are eating the cpu. top output: top - 03:42:04 up 1:29, 5 users, load average: 1.65, 1.62, 1.30 Tasks: 95 total, 2 running, 93 sleeping, 0 stopped, 0 zombie Cpu(s): 40.1% user, 59.9% system, 0.0% nice, 0.0% idle, 0.0% IO-wait Mem: 514580k total, 399064k used, 115516k free, 20268k buffers Swap: 995988k total, 652k used, 995336k free, 240440k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ Command 4942 root 20 0 52876 15m 37m R 36.2 3.1 6:24.26 /etc/X11/X vt7 -auth /var/run/xauth/A:0-5RSO1y 4998 holger 15 0 26960 15m 24m S 35.5 3.0 6:11.39 kdeinit: kded 5034 holger 15 0 25480 14m 23m S 27.2 2.8 4:48.96 kdeinit: kwin 5127 holger 16 0 1924 984 1772 R 0.7 0.2 0:00.79 top 5040 holger 15 0 28932 17m 26m S 0.3 3.5 0:02.44 kdeinit: kicker 1 root 16 0 1348 504 1312 S 0.0 0.1 0:04.80 init [3] 2 root RT 0 0 0 0 S 0.0 0.0 0:00.00 [migration/0] 3 root 34 19 0 0 0 S 0.0 0.0 0:00.00 [ksoftirqd/0] 4 root 5 -10 0 0 0 S 0.0 0.0 0:00.97 [events/0] 5 root 5 -10 0 0 0 S 0.0 0.0 0:00.12 [kblockd/0] 6 root 15 0 0 0 0 S 0.0 0.0 0:00.05 [khubd] 7 root 25 0 0 0 0 S 0.0 0.0 0:00.00 [pdflush] 8 root 15 0 0 0 0 S 0.0 0.0 0:00.63 [pdflush] i could reproduce this two times by opening a konsole window, and in that one run tail -f .xsession-errors and then open two more konsole windows and close one of them afterwards. this caused the cpu load, and the following message was printed to .xsession-errors: wave lookup: want=440.000000 got=440.000000 length=12463 filter: fc=0.816327 fr=1.088435 st=1.000000 is=65536 X Error: BadWindow (invalid Window parameter) 3 Major opcode: 20 Minor opcode: 0 Resource id: 0x22000ad clearing filter state at: 0) +0.00000000000000000000000000000000000000 1) +0.00000000000000000000000000000000000000 2) -0.00000000000000000000000000000000000000 3) -0.00000000000000000000000000000000000000 4) +0.00000000000000000000000000000000000000 5) +0.00000000000000000000000000000000000000 6) -0.00000000000000000000000000000000000000 7) -0.00000000000000000000000000000000000000 X Error: BadWindow (invalid Window parameter) 3 Major opcode: 20 Minor opcode: 0 Resource id: 0x22000ad X Error: BadWindow (invalid Window parameter) 3 Major opcode: 18 Minor opcode: 0 Resource id: 0x22000ad only logging out of X and loggging in after that helps. this bug also happens at other circumstances, for example clicking on a konqueror entry in kicker, which switches to another virtual desktop. sometimes clicking on the close icon of a window seems to not work, and then after a second the window disappears and the cpu load goes up... i am running gentoo linux, xfree 4.3.0, linux kernel 2.6.0-test10. is it only me, or do other people also have the same problem? can somebody tell me how to debug it further? thanks, Holger