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

occured while browsing the internet using Chromium

ProblemType: KernelOops
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-7-generic 2.6.38-7.38
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.38-7.38-generic 2.6.38
Uname: Linux 2.6.38-7-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.
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: jsimms100 1188 F.... xfce4-volumed
                      jsimms100 1223 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'ICH6'/'Intel ICH6 with Cx20468-31 at irq 21'
   Mixer name : 'Conexant Cx20468-31'
   Components : 'AC97a:43585430'
   Controls : 23
   Simple ctrls : 16
Date: Thu Mar 24 16:55:47 2011
Failure: oops
Frequency: I don't know.
HibernationDevice: RESUME=UUID=eb68209c-7daa-404d-ad40-e88afefaec84
InstallationMedia: Xubuntu 10.10 "Maverick Meerkat" - Release i386 (20101008.1)
Lsusb:
 Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 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: Gateway MX6128
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-7-generic root=UUID=36e3e6ba-76b3-4e7e-8b7e-da45d30821d8 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-7-generic N/A
 linux-backports-modules-2.6.38-7-generic N/A
 linux-firmware 1.49
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: Upgraded to natty on 2011-03-22 (1 days ago)
dmi.bios.date: 09/28/2005
dmi.bios.vendor: Gateway
dmi.bios.version: 70.02
dmi.board.vendor: Gateway
dmi.board.version: Rev 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 8
dmi.chassis.vendor: Gateway
dmi.chassis.version: Rev.1
dmi.modalias: dmi:bvnGateway:bvr70.02:bd09/28/2005:svnGateway:pnMX6128:pvr3402283:rvnGateway:rn:rvrRev1.0:cvnGateway:ct8:cvrRev.1:
dmi.product.name: MX6128
dmi.product.version: 3402283
dmi.sys.vendor: Gateway