BUG: Bad page map in process xfdesktop pte:1ffac025 pmd:11391067

dont know what this is bug about..

ProblemType: KernelOops
DistroRelease: Ubuntu 10.10
Package: linux-image-2.6.35-14-generic 2.6.35-14.20
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.35-14.20-generic 2.6.35
Uname: Linux 2.6.35-14-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Annotation: Your system might become unstable now and might need to be restarted.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: rev20 [VIA 82C686A/B rev20], device 0: VIA 82C686A/B rev20 [VIA 82C686A/B rev20]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: rev20 [VIA 82C686A/B rev20], device 0: VIA 82C686A/B rev20 [VIA 82C686A/B rev20]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: kng 1611 F.... xfce4-volumed
                      kng 1625 F.... pulseaudio
                      kng 1655 F.... xfce4-mixer-plu
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'rev20'/'VIA 82C686A/B rev20 with AD1881A at 0xdc00, irq 10'
   Mixer name : 'Analog Devices AD1881A'
   Components : 'AC97a:41445348'
   Controls : 31
   Simple ctrls : 21
Date: Wed Aug 11 21:02:49 2010
EcryptfsInUse: Yes
Failure: oops
Frequency: This has only happened once.
HibernationDevice: RESUME=UUID=675db728-1d12-4b6f-8263-b8ade23c434b
InstallationMedia: Xubuntu 10.10 "Maverick Meerkat" - Alpha i386 (20100701)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 003: ID 0ace:1215 ZyDAS ZD1211B 802.11g
 Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. USB-2.0 4-Port HUB
 Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
MachineType: Fujitsu Siemens VIA694X/686A
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.35-14-generic root=UUID=b581c619-12b6-4caa-a5af-36ef6153db36 ro quiet splash
RelatedPackageVersions: linux-firmware 1.37
RfKill:
 1: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
Title: BUG: Bad page map in process xfdesktop pte:1ffac025 pmd:11391067
dmi.bios.date: 08/03/2000
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 62710
dmi.board.name: 6VX7-4X
dmi.board.vendor: GIGABYTE
dmi.board.version: 1.0
dmi.chassis.asset.tag: 00000000
dmi.chassis.type: 3
dmi.chassis.version: Version 1.00
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr62710:bd08/03/2000:svnFujitsuSiemens:pnVIA694X/686A:pvr00000000:rvnGIGABYTE:rn6VX7-4X:rvr1.0:cvn:ct3:cvrVersion1.00:
dmi.product.name: VIA694X/686A
dmi.product.version: 00000000
dmi.sys.vendor: Fujitsu Siemens