applet.py crashed with KeyError in job_event()

Bug Description

Binary package hint: system-config-printer

I had a network printer configured in 10. as lpd printer but since upgradew to 10.10 i have problem connecting to these printers. Today while trying to modify the printer the python applet crashed

ProblemType: Crash
DistroRelease: Ubuntu 10.10
Package: system-config-printer-gnome 1.2.3+20100723-0ubuntu7
ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Tue Sep 28 16:36:28 2010
ExecutablePath: /usr/share/system-config-printer/applet.py
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
InterpreterPath: /usr/bin/python2.6
Lpstat:
 device for Generic-CUPS-PDF-Printer: cups-pdf:/
 device for HP-LaserJet-1022: smb://cgl.co.in/192.168.90.88/print%24
 device for HP-Officejet-k7100: lpd://192.168.90.23/PS-77221B-U1
 device for RDLOCAL: lpd://192.168.87.201/PS-10AB2F-P1
 device for Samsung-ML-1640: lpd://192.168.87.144/PS-558738-U3
MachineType: Sony Corporation VGN-S56GP_S
PackageArchitecture: all
Papersize: a4
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
PpdFiles:
 Samsung-ML-1640: Samsung ML-1640, SpliX V. 2.0.0
 RDLOCAL: HP LaserJet 1160 Series, hpcups 3.10.6
 HP-Officejet-k7100: HP Officejet k7100, hpcups 3.10.6
 HP-LaserJet-1022: HP LaserJet 1022 Foomatic/foo2zjs-z1 (recommended)
 Generic-CUPS-PDF-Printer: Generic CUPS-PDF Printer
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=d63396f0-bf28-4e69-b055-d51eb2afc060 ro quiet splash
ProcCmdline: /usr/bin/python /usr/share/system-config-printer/applet.py
ProcEnviron:
 PATH=(custom, user)
 LANG=en_IN
 SHELL=/bin/bash
PythonArgs: ['/usr/share/system-config-printer/applet.py']
SourcePackage: system-config-printer
Title: applet.py crashed with KeyError in job_event()
UserGroups: adm admin cdrom dialout lp lpadmin plugdev sambashare
dmi.bios.date: 11/08/2005
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: R0103V0
dmi.chassis.type: 10
dmi.chassis.vendor: Sony Corporation
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrR0103V0:bd11/08/2005:svnSonyCorporation:pnVGN-S56GP_S:pvrJ0016RWL:cvnSonyCorporation:ct10:cvr:
dmi.product.name: VGN-S56GP_S
dmi.product.version: J0016RWL
dmi.sys.vendor: Sony Corporation