WARNING: at /build/buildd/linux-2.6.38/drivers/usb/host/ehci-hcd.c:1137 ehci_endpoint_reset 0xee/0x100()

problem happen with every boot-up,and with every type of usb connected e.i.. hdd, external dvd/cd, camera, etc.

ProblemType: KernelOops
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-8-generic 2.6.38-8.41
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-8.41-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.
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: Slmodemd 1046 F.... slmodemd
                      fragman 1495 F.... pulseaudio
 /dev/snd/pcmC0D6c: Slmodemd 1046 F...m slmodemd
 /dev/snd/pcmC0D6p: Slmodemd 1046 F...m slmodemd
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf4780000 irq 45'
   Mixer name : 'Analog Devices AD1981'
   Components : 'HDA:11d41981,103c30b1,00100200 HDA:11c13026,103c30b1,00100700'
   Controls : 13
   Simple ctrls : 11
Date: Sun Apr 10 20:18:34 2011
Failure: oops
HibernationDevice: RESUME=UUID=9e09514e-db3f-4059-8632-f126f30423c2
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta 1 i386 (20110329.1)
MachineType: Hewlett-Packard HP Compaq tc4400 (RH835UC#ABA)
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-2.6.38-8-generic root=UUID=e41bc3b4-af17-4ec1-960f-50eba3a005a6 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/drivers/usb/host/ehci-hcd.c:1137 ehci_endpoint_reset+0xee/0x100()
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/09/2008
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68YHV Ver. F.0C
dmi.board.name: 30B1
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 59.35
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68YHVVer.F.0C:bd07/09/2008:svnHewlett-Packard:pnHPCompaqtc4400(RH835UC#ABA):pvrF.0C:rvnHewlett-Packard:rn30B1:rvrKBCVersion59.35:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP Compaq tc4400 (RH835UC#ABA)
dmi.product.version: F.0C
dmi.sys.vendor: Hewlett-Packard