WARNING: at /build/buildd/linux-2.6.38/net/wireless/mlme.c:307 __cfg80211_auth_remove+0x60/0xb0 [cfg80211]()

I don't know

ProblemType: KernelOops
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-8-generic 2.6.38-8.42
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-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: Intel [HDA Intel], device 0: ALC262 Analog [ALC262 Analog]
   Subdevices: 0/1
   Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC262 Analog [ALC262 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: helioalb 1094 F.... pulseaudio
 /dev/snd/pcmC0D0p: helioalb 1094 F...m pulseaudio
CRDA: Error: [Errno 2] Arquivo ou diretório não encontrado
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfc300000 irq 46'
   Mixer name : 'Realtek ALC262'
   Components : 'HDA:10ec0262,104d2800,00100100 HDA:14f12c06,104d1700,00100000'
   Controls : 16
   Simple ctrls : 10
Date: Sat Apr 16 12:10:03 2011
Failure: oops
Frequency: Once every few days.
HibernationDevice: RESUME=UUID=a24034c1-ff90-4dac-8273-8a9fec8152b1
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110413)
MachineType: Sony Corporation VGN-NR320AH
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=b7d1be31-545f-4c05-903c-dbb79fe62e4b ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-8-generic N/A
 linux-backports-modules-2.6.38-8-generic N/A
 linux-firmware 1.50
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
Title: WARNING: at /build/buildd/linux-2.6.38/net/wireless/mlme.c:307 __cfg80211_auth_remove+0x60/0xb0 [cfg80211]()
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/28/2008
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: R2060J9
dmi.board.asset.tag: N/A
dmi.board.name: VAIO
dmi.board.vendor: Sony Corporation
dmi.board.version: N/A
dmi.chassis.asset.tag: N/A
dmi.chassis.type: 10
dmi.chassis.vendor: Sony Corporation
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrR2060J9:bd02/28/2008:svnSonyCorporation:pnVGN-NR320AH:pvrC7000FN9:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrN/A:
dmi.product.name: VGN-NR320AH
dmi.product.version: C7000FN9
dmi.sys.vendor: Sony Corporation