WARNING: at /build/buildd/linux-2.6.31/fs/notify/inotify/inotify_user.c:398 inotify_remove_from_idr+0x7e/0x90()

a kernel oops in background

...
[41974.323267] input: HDA Intel HP Out at Ext Right Jack as /devices/pci0000:00/0000:00:1b.0/sound/card0/input29
[42187.784444] zc3xx: probe 2wr ov vga 0x0000
[42222.945401] zc3xx: probe 2wr ov vga 0x0000
[48965.886582] dell-wmi: Unknown key ffd0 pressed
[48967.287917] dell-wmi: Unknown key ffd1 pressed
[49389.600189] dell-wmi: Unknown key ffd0 pressed
[49390.798397] dell-wmi: Unknown key ffd1 pressed
[49626.372190] dell-wmi: Unknown key ffd0 pressed
[49704.696118] dell-wmi: Unknown key ffd1 pressed
[49715.581388] dell-wmi: Unknown key ffd0 pressed
[49764.832042] dell-wmi: Unknown key ffd1 pressed
[49794.828240] dell-wmi: Unknown key ffd0 pressed
[49796.161206] dell-wmi: Unknown key ffd1 pressed
[49837.576063] dell-wmi: Unknown key ffd0 pressed
[49838.935171] dell-wmi: Unknown key ffd1 pressed
[49903.016172] dell-wmi: Unknown key ffd0 pressed
[49904.322566] dell-wmi: Unknown key ffd1 pressed
[60490.264814] dell-wmi: Unknown key ffd0 pressed
[60998.238872] dell-wmi: Unknown key ffd1 pressed
[64482.490137] ------------[ cut here ]------------
[64482.490146] WARNING: at /build/buildd/linux-2.6.31/fs/notify/inotify/inotify_user.c:398 inotify_remove_from_idr+0x7e/0x90()
[64482.490149] Hardware name: Latitude E6400
[64482.490150] Modules linked in: snd_hda_intel snd_hda_codec_idt snd_hda_codec snd_usb_audio snd_usb_lib gspca_zc3xx gspca_main usb_storage cdc_acm nls_iso8859_1 nls_cp437 vfat fat aes_i586 aes_generic hidp binfmt_misc ppdev bridge stp bnep arc4 ecb iwlagn iwlcore snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm joydev snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event mac80211 ricoh_mmc snd_seq snd_timer iptable_filter snd_seq_device uvcvideo sdhci_pci psmouse dell_wmi ip_tables snd videodev sdhci nvidia(P) cfg80211 serio_raw heci(C) soundcore x_tables dell_laptop v4l1_compat btusb lp snd_page_alloc dcdbas parport led_class usbhid ohci1394 ieee1394 e1000e intel_agp agpgart video output [last unloaded: snd_hda_intel]
[64482.490201] Pid: 4437, comm: kded4 Tainted: P C 2.6.31-14-generic #48-Ubuntu
[64482.490203] Call Trace:
[64482.490208] [<c014518d>] warn_slowpath_common+0x6d/0xa0
[64482.490211] [<c021649e>] ? inotify_remove_from_idr+0x7e/0x90
[64482.490214] [<c021649e>] ? inotify_remove_from_idr+0x7e/0x90
[64482.490217] [<c01451d5>] warn_slowpath_null+0x15/0x20
[64482.490220] [<c021649e>] inotify_remove_from_idr+0x7e/0x90
[64482.490222] [<c0216927>] inotify_ignored_and_remove_idr+0x87/0xb0
[64482.490225] [<c0215c98>] inotify_freeing_mark+0x8/0x10
[64482.490228] [<c0214760>] fsnotify_destroy_mark_by_entry+0x120/0x170
[64482.490231] [<c02162cb>] sys_inotify_rm_watch+0x5b/0xa0
[64482.490234] [<c010336c>] syscall_call+0x7/0xb
[64482.490236] ---[ end trace 8f5908084f85c210 ]---

Maby problem with pulseaudio + skype 2.1.beta (?)

ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: i386
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf6fdc000 irq 21'
   Mixer name : 'IDT 92HD71B7X'
   Components : 'HDA:111d76b2,10280233,00100302'
   Controls : 35
   Simple ctrls : 22
Card1.Amixer.info:
 Card hw:1 'U0x46d0x8d7'/'USB Device 0x46d:0x8d7 at usb-0000:00:1d.7-1.3, full speed'
   Mixer name : 'USB Mixer'
   Components : 'USB046d:08d7'
   Controls : 3
   Simple ctrls : 2
Date: Tue Nov 3 18:16:16 2009
DistroRelease: Ubuntu 9.10
Failure: oops
HibernationDevice: RESUME=UUID=3a4ff5ff-8b3f-4d72-88a5-637ed4ea38c4
MachineType: Dell Inc. Latitude E6400
NonfreeKernelModules: nvidia
Package: linux-image-2.6.31-14-generic 2.6.31-14.48
ProcCmdLine: root=UUID=24898602-d443-459e-ad91-62f4a4e18ff8 ro quiet splash
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
RelatedPackageVersions:
 linux-backports-modules-2.6.31-14-generic N/A
 linux-firmware 1.24
SourcePackage: linux
Tags: kernel-oops
Title: WARNING: at /build/buildd/linux-2.6.31/fs/notify/inotify/inotify_user.c:398 inotify_remove_from_idr+0x7e/0x90()
Uname: Linux 2.6.31-14-generic i686
WpaSupplicantLog:

dmi.bios.date: 05/11/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A14
dmi.board.name: 0TN284
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA14:bd05/11/2009:svnDellInc.:pnLatitudeE6400:pvr:rvnDellInc.:rn0TN284:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude E6400
dmi.sys.vendor: Dell Inc.