Kernel panic when using mount.ncpfs [kernel BUG at /build/buildd/linux-2.6.38/fs/dcache.c:2126]

Every time I try to do a mount.ncpfs I get a kernel panic. Steps to reproduce:

1) Clean boot
2) Open a terminal
3) Enter 'sudo mount.ncpfs -S <servername> -A <server-ip-address> -U <novell-user-name> -u <linux-user-name> -g admin /media/<dirname>'
4) Enter password for sudo
5) Enter password for Novell server

This did work in Ubuntu Lucid, used it a lot to copy outlook.pst files of about 2G in size without any issues.

ProblemType: KernelOops
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-7-generic 2.6.38-7.39
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: PCH [HDA Intel PCH], device 0: ALC887-VD Analog [ALC887-VD Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: mycroes 1475 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'PCH'/'HDA Intel PCH at 0xfe700000 irq 49'
   Mixer name : 'Intel CougarPoint HDMI'
   Components : 'HDA:10ec0887,102804ab,00100302 HDA:80862805,80862805,00100000'
   Controls : 36
   Simple ctrls : 19
Card1.Amixer.info:
 Card hw:1 'Generic'/'HD-Audio Generic at 0xfe640000 irq 51'
   Mixer name : 'ATI R6xx HDMI'
   Components : 'HDA:1002aa01,00aa0100,00100200'
   Controls : 4
   Simple ctrls : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Date: Mon Apr 4 16:26:31 2011
Failure: oops
HibernationDevice: RESUME=UUID=e548d9c5-9f31-4087-a054-50599339e82e
MachineType: Dell Inc. Vostro 460
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-7-generic root=UUID=7c6e077f-66fe-4e6e-8e83-c54372e3a957 ro splash quiet 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:

SourcePackage: linux
Title: 6.962173] ------------[ cut here ]------------
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/15/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A03
dmi.board.name: 0Y2MRG
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA03:bd02/15/2011:svnDellInc.:pnVostro460:pvr:rvnDellInc.:rn0Y2MRG:rvrA00:cvnDellInc.:ct3:cvr:
dmi.product.name: Vostro 460
dmi.sys.vendor: Dell Inc.