Multiple copies of print jobs on HP laserjet 2420

Problem occurs when printing to an HP Laserjet 2420n. It prints 4 copies of the same.
The printer a Windows shared printer.
It was working fine until updating to 11.10 (10.04, 10.10 and 11.04)
I tried installing drivers from HP and problem still occurs.
Other printers work just fine. (haven't tried with other HP Printers. Will do that and update)
Please let me know if any further information is needed.
Thanks

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: cups 1.5.0-8ubuntu6
ProcVersionSignature: Ubuntu 3.0.0-15.26-generic-pae 3.0.13
Uname: Linux 3.0.0-15-generic-pae i686
ApportVersion: 1.23-0ubuntu4
Architecture: i386
CupsErrorLog:
 W [13/Feb/2012:12:40:20 +1300] failed to AddProfile: org.freedesktop.ColorManager.Failed:profile object path '/org/freedesktop/ColorManager/profiles/staffroom2_Gray__' has already been added
 W [13/Feb/2012:12:40:20 +1300] failed to AddProfile: org.freedesktop.ColorManager.Failed:profile object path '/org/freedesktop/ColorManager/profiles/staffroom2_CMYK__' has already been added
 W [13/Feb/2012:13:09:25 +1300] failed to AddProfile: org.freedesktop.ColorManager.Failed:profile object path '/org/freedesktop/ColorManager/profiles/B8Printer_Gray__' has already been added
 W [13/Feb/2012:13:09:26 +1300] failed to AddProfile: org.freedesktop.ColorManager.Failed:profile object path '/org/freedesktop/ColorManager/profiles/B8Printer_Gray__' has already been added
 W [13/Feb/2012:13:09:26 +1300] failed to AddProfile: org.freedesktop.ColorManager.Failed:profile object path '/org/freedesktop/ColorManager/profiles/B8Printer_Gray__' has already been added
Date: Mon Feb 13 13:09:54 2012
ExecutablePath: /usr/sbin/cupsd
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
Lpstat:
 device for B8Printer: smb://WSC/printserver/B8Printer
 device for staffroom2: smb://WSC/PRINTSERVER/KM-Staffroom-Copier2
MachineType: TOSHIBA TECRA R850
Papersize: a4
PpdFiles:
 staffroom2: KONICA MINOLTA C652SeriesPS(P)
 B8Printer: HP LaserJet 2420 Postscript (recommended)
ProcAttrCurrent: /usr/sbin/cupsd (enforce)
ProcEnviron: PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-15-generic-pae root=UUID=1d4ec240-e41f-4650-8da7-2ae3333525b5 ro quiet splash vt.handoff=7
SourcePackage: cups
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/25/2011
dmi.bios.vendor: TOSHIBA
dmi.bios.version: Version 3.10
dmi.board.asset.tag: 0000000000
dmi.board.name: Portable PC
dmi.board.vendor: TOSHIBA
dmi.board.version: Version A0
dmi.chassis.asset.tag: 0000000000
dmi.chassis.type: 10
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: Version 1.0
dmi.modalias: dmi:bvnTOSHIBA:bvrVersion3.10:bd08/25/2011:svnTOSHIBA:pnTECRAR850:pvrPT525A-04801V:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0:
dmi.product.name: TECRA R850
dmi.product.version: PT525A-04801V
dmi.sys.vendor: TOSHIBA