log off

while attempting to log off screen goes blank and locks up

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 'Live'/'SB Live! 5.1 [SB0220] (rev.10, serial:0x80651102) at 0xb000, irq 17'
   Mixer name : 'SigmaTel STAC9708,11'
   Components : 'AC97a:83847608'
   Controls : 224
   Simple ctrls : 45
Card1.Amixer.info:
 Card hw:1 'NVidia'/'HDA NVidia at 0xd5000000 irq 23'
   Mixer name : 'Analog Devices AD1986A'
   Components : 'HDA:11d41986,1043818f,00100500'
   Controls : 23
   Simple ctrls : 14
Date: Sun Nov 1 18:45:16 2009
DistroRelease: Ubuntu 9.10
Failure: oops
HibernationDevice: RESUME=UUID=f460469a-fbdf-4371-99eb-2b4a7d908b04
InstallationMedia: Xubuntu 9.10 "Karmic Koala" - Release Candidate i386 (20091021)
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.

 virbr0 no wireless extensions.
Lsusb:
 Bus 002 Device 002: ID 0461:4d0f Primax Electronics, Ltd
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: System manufacturer System Product Name
NonfreeKernelModules: nvidia
Package: linux-image-2.6.31-14-generic 2.6.31-14.48
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-14-generic root=UUID=b0a1c9f2-ff2d-4f9b-97c6-ed7b4b908066 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
RfKill:

SourcePackage: linux
Tags: kernel-oops
Title: WARNING: at /build/buildd/linux-2.6.31/fs/notify/inotify/inotify_fsnotify.c:129 idr_callback+0x4f/0x80()
Uname: Linux 2.6.31-14-generic i686
dmi.bios.date: 07/13/2006
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: ASUS P5NSLI ACPI BIOS 0601 Velocity Micro Edition
dmi.board.name: P5NSLI
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: 1.XX
dmi.chassis.asset.tag: 123456789000
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvrASUSP5NSLIACPIBIOS0601VelocityMicroEdition:bd07/13/2006:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5NSLI:rvr1.XX:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer