WARNING: at /build/buildd/linux-2.6.38/net/sched/sch_generic.c:256 dev_watchdog 0x213/0x220()

This was tested on a Asus EEE netbook 1005PX
The wireless network doesn't work. It detects all wireless networks, but when i try to connect to one, after asking the password, system hangs up, and i have to force shutdown with the power button.
Wireless network lspci report is:
02:00.0 Network controller: Atheros Communications Inc. AR2427 Wireless Network Adapter (PCI-Express) (rev 01)

Now the bug that took me here is that whenever i go to system->additional drivers, it pops that "A serious kernel error" error box.

If you need more info, ask me plz :3

ProblemType: KernelOops
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-8-generic 2.6.38-8.42
Regression: Yes
Reproducible: Yes
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: ALC269 Analog [ALC269 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: victor 1295 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf7cf8000 irq 46'
   Mixer name : 'Realtek ALC269'
   Components : 'HDA:10ec0269,10438437,00100004'
   Controls : 9
   Simple ctrls : 5
Date: Fri Apr 15 09:54:58 2011
Failure: oops
HibernationDevice: RESUME=UUID=e4d50096-fc79-4370-a4e0-01d8a5f3acbe
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110413)
MachineType: ASUSTeK Computer INC. 1005PX
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=3af92e6d-036a-4876-85d8-4c3efc08657d 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
SourcePackage: linux
Title: WARNING: at /build/buildd/linux-2.6.38/net/sched/sch_generic.c:256 dev_watchdog+0x213/0x220()
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/01/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1102
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1001PX
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer INC.
dmi.chassis.version: x.x
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1102:bd12/01/2010:svnASUSTeKComputerINC.:pn1005PX:pvrx.x:rvnASUSTeKComputerINC.:rn1001PX:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
dmi.product.name: 1005PX
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.