after logging in, I find that cupsd is not running

[DAP]

Binary package hint: cups

I have been noticing that occasionally cupsd is not running on my system.
Today, the first thing I ran after booting my computer was "System Monitor", and cupsd is not in the list of processes.
In the log files, there are some mentions of not being able to connect to the cups server, but nothing about cups itself.

This is about all I can find with respect to cups & printing in the log files:
Jul 15 10:42:31 Compromise udev-configure-printer: add /devices/pci0000:00/0000:00:1a.7/usb1/1-1/1-1:1.0
Jul 15 10:42:31 Compromise udev-configure-printer: add /module/lp
Jul 15 10:42:31 Compromise udev-configure-printer: parent devpath is /devices/pci0000:00/0000:00:1a.7/usb1/1-1
Jul 15 10:42:31 Compromise udev-configure-printer: Device vendor/product is 04A9:1090
Jul 15 10:42:31 Compromise udev-configure-printer: add /devices/pci0000:00/0000:00:1a.7/usb1/1-1/1-1:1.0/usb/lp0
Jul 15 10:42:31 Compromise kernel: [ 15.538118] usblp0: USB Bidirectional printer dev 2 if 0 alt 0 proto 2 vid 0x04A9 pid 0x1090
Jul 15 10:42:31 Compromise kernel: [ 15.538138] usbcore: registered new interface driver usblp
Jul 15 10:42:31 Compromise kernel: [ 15.565840] cx88/2: cx2388x dvb driver version 0.0.7 loaded
Jul 15 10:42:31 Compromise kernel: [ 15.565842] cx88/2: registering cx8802 driver, type: dvb access: shared
Jul 15 10:42:31 Compromise kernel: [ 15.565844] cx88[0]/2: subsystem: 1002:a101, board: ATI HDTV Wonder [card=34]
Jul 15 10:42:31 Compromise kernel: [ 15.565846] cx88[0]/2: cx2388x based DVB/ATSC card
Jul 15 10:42:31 Compromise kernel: [ 15.565848] cx8802_alloc_frontends() allocating 1 frontend(s)
Jul 15 10:42:31 Compromise init: Failed to spawn rc-sysinit main process: unable to open console: Input/output error
Jul 15 10:42:31 Compromise kernel: [ 15.833427] sky2 eth0: Link is up at 1000 Mbps, full duplex, flow control both
Jul 15 10:42:31 Compromise kernel: [ 15.833950] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
Jul 15 10:42:31 Compromise kernel: [ 16.205629] 5:3:1: cannot get freq at ep 0x82
Jul 15 10:42:31 Compromise kernel: [ 16.212310] usbcore: registered new interface driver snd-usb-audio
Jul 15 10:42:31 Compromise udev-configure-printer: failed to claim interface
Jul 15 10:42:31 Compromise udev-configure-printer: invalid or missing IEEE 1284 Device ID
Jul 15 10:42:31 Compromise udev-configure-printer: Failed to get parent
Jul 15 10:42:31 Compromise udev-configure-printer: parent devpath is /devices/pci0000:00/0000:00:1a.7/usb1/1-1
Jul 15 10:42:31 Compromise udev-configure-printer: MFG:Canon MDL:i9900 SERN:- serial:2035f6
Jul 15 10:42:32 Compromise kernel: [ 16.998060] hda_codec: AD1989B: BIOS auto-probing.
Jul 15 10:42:32 Compromise kernel: [ 16.998157] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input7
Jul 15 10:42:32 Compromise kernel: [ 16.999829] nxt200x: NXT2004 Detected
Jul 15 10:42:32 Compromise kernel: [ 17.004568] alloc irq_desc for 34 on node -1
Jul 15 10:42:32 Compromise kernel: [ 17.004570] alloc kstat_irqs on node -1
Jul 15 10:42:32 Compromise kernel: [ 17.004576] HDA Intel 0000:02:00.1: PCI INT B -> GSI 34 (level, low) -> IRQ 34
Jul 15 10:42:32 Compromise kernel: [ 17.004622] HDA Intel 0000:02:00.1: setting latency timer to 64
Jul 15 10:42:33 Compromise kernel: [ 17.552866] tuner-simple 4-0061: creating new instance
Jul 15 10:42:33 Compromise kernel: [ 17.552868] tuner-simple 4-0061: type set to 68 (Philips TUV1236D ATSC/NTSC dual in)
Jul 15 10:42:33 Compromise kernel: [ 17.552871] DVB: registering new adapter (cx88[0])
Jul 15 10:42:33 Compromise kernel: [ 17.552873] DVB: registering adapter 0 frontend 0 (Nextwave NXT200X VSB/QAM frontend)...
Jul 15 10:42:33 Compromise udev-configure-printer: failed to connect to CUPS server; giving up
Jul 15 10:42:33 Compromise kernel: [ 18.255566] type=1505 audit(1279215753.918:6): operation="profile_load" pid=1091 name="/usr/sbin/mysqld"
Jul 15 10:42:34 Compromise init: ssh main process (1073) terminated with status 255

rebooting causes cupsd to re-appear in the process list.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: cups 1.4.3-1ubuntu1.2
ProcVersionSignature: Ubuntu 2.6.32-24.38-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-24-generic x86_64
Architecture: amd64
CheckboxSubmission: 4f08ac62e89ad166a1e0b05f95495253
CheckboxSystem: fd6c484c0b5d20a2f1cd036ef0f63975
CupsErrorLog:

Date: Thu Jul 15 10:49:21 2010
Lpstat: Error: command ['lpstat', '-v'] failed with exit code 1: lpstat: Connection refused
MachineType: System manufacturer System Product Name
Papersize: letter
PpdFiles:
 tp0: Canon_i9900 TurboPrint
 i9900: Generic text-only printer
ProcCmdLine: root=UUID=b5a554b5-92df-4492-abbf-290fd809d2c0 ro xforcevesa quiet splash crashkernel=384M-2G:64M,2G-:128M
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: cups
dmi.bios.date: 09/02/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1701
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: P6T DELUXE
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1701:bd09/02/2009:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP6TDELUXE:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer