BUG: unable to handle kernel NULL pointer dereference at 000001e4

[Embridioum]

Swarm of crashes upon hard-restart after complete system freeze.

ProblemType: KernelOops
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-7-generic 2.6.38-7.39
Regression: Yes
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.38-7.39-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: mattias 1428 F.... pulseaudio
 /dev/snd/controlC1: mattias 1428 F.... pulseaudio
CRDA: Error: [Errno 2] Filen eller katalogen finns inte
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xefebc000 irq 44'
   Mixer name : 'SigmaTel STAC9221 A1'
   Components : 'HDA:83847680,102801d7,00103601 HDA:14f12bfa,14f100c3,00090000'
   Controls : 21
   Simple ctrls : 12
Card1.Amixer.info:
 Card hw:1 'U0x46d0x8c6'/'USB Device 0x46d:0x8c6 at usb-0000:00:1d.7-5, high speed'
   Mixer name : 'USB Mixer'
   Components : 'USB046d:08c6'
   Controls : 2
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'Mic',0
   Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum
   Capture channels: Mono
   Limits: Capture 0 - 3072
   Mono: Capture 0 [0%] [20.00dB] [off]
Date: Thu Mar 31 20:58:01 2011
Failure: oops
Frequency: This has only happened once.
HibernationDevice: RESUME=UUID=d66e1082-81f3-4192-ad18-5e7341d93ab8
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110302)
MachineType: Dell Inc. MXC062
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-7-generic root=UUID=00f04cef-bae3-4c78-8970-0d8313cf867e 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
SourcePackage: linux
Title: BUG: unable to handle kernel NULL pointer dereference at 000001e4
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/02/2007
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A07
dmi.board.name: 0RT486
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA07:bd04/02/2007:svnDellInc.:pnMXC062:pvr:rvnDellInc.:rn0RT486:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: MXC062
dmi.sys.vendor: Dell Inc.