error log

D [10/Oct/2011:00:34:43 +0530] cupsdSetBusyState: Printing jobs
D [10/Oct/2011:00:34:43 +0530] cupsdReadClient: 13 POST / HTTP/1.1
D [10/Oct/2011:00:34:43 +0530] cupsdSetBusyState: Active clients and printing jobs
D [10/Oct/2011:00:34:43 +0530] cupsdAuthorize: Authorized as pkp using PeerCred
D [10/Oct/2011:00:34:43 +0530] cupsdReadClient: 13 1.1 Get-Jobs 1
D [10/Oct/2011:00:34:43 +0530] Get-Jobs ipp://localhost/printers/
D [10/Oct/2011:00:34:43 +0530] Returning IPP successful-ok for Get-Jobs (ipp://localhost/printers/) from localhost
D [10/Oct/2011:00:34:43 +0530] cupsdSetBusyState: Printing jobs
D [10/Oct/2011:00:34:43 +0530] cupsdReadClient: 13 POST / HTTP/1.1
D [10/Oct/2011:00:34:43 +0530] cupsdSetBusyState: Active clients and printing jobs
D [10/Oct/2011:00:34:43 +0530] cupsdAuthorize: Authorized as pkp using PeerCred
D [10/Oct/2011:00:34:43 +0530] cupsdReadClient: 13 1.1 Get-Jobs 1
D [10/Oct/2011:00:34:43 +0530] Get-Jobs ipp://localhost/printers/
D [10/Oct/2011:00:34:43 +0530] [Job 18] Loading attributes...
E [10/Oct/2011:00:34:43 +0530] [Job 18] Unable to queue job for destination "LBP2900"!
D [10/Oct/2011:00:34:43 +0530] Returning IPP successful-ok for Get-Jobs (ipp://localhost/printers/) from localhost
D [10/Oct/2011:00:34:43 +0530] cupsdSetBusyState: Printing jobs
D [10/Oct/2011:00:34:43 +0530] cupsdReadClient: 13 POST / HTTP/1.1
D [10/Oct/2011:00:34:43 +0530] cupsdSetBusyState: Active clients and printing jobs
D [10/Oct/2011:00:34:43 +0530] cupsdAuthorize: Authorized as pkp using PeerCred
D [10/Oct/2011:00:34:43 +0530] cupsdReadClient: 13 1.1 Create-Printer-Subscription 1
D [10/Oct/2011:00:34:43 +0530] Create-Printer-Subscription /
D [10/Oct/2011:00:34:43 +0530] cupsdCreateSubscription(con=0x2210e518(13), uri="/")
D [10/Oct/2011:00:34:43 +0530] pullmethod="ippget"
D [10/Oct/2011:00:34:43 +0530] notify-lease-duration=86400
D [10/Oct/2011:00:34:43 +0530] notify-time-interval=0
D [10/Oct/2011:00:34:43 +0530] cupsdAddSubscription(mask=17800, dest=(nil)(), job=(nil)(0), uri="(null)")
D [10/Oct/2011:00:34:43 +0530] Added subscription 27 for server
D [10/Oct/2011:00:34:43 +0530] cupsdMarkDirty(-----S)
D [10/Oct/2011:00:34:43 +0530] cupsdSetBusyState: Active clients, printing jobs, and dirty files
D [10/Oct/2011:00:34:43 +0530] Returning IPP successful-ok for Create-Printer-Subscription (/) from localhost
D [10/Oct/2011:00:34:43 +0530] cupsdSetBusyState: Printing jobs and dirty files
D [10/Oct/2011:00:34:44 +0530] cupsdReadClient: 13 POST / HTTP/1.1
D [10/Oct/2011:00:34:44 +0530] cupsdSetBusyState: Active clients, printing jobs, and dirty files
D [10/Oct/2011:00:34:44 +0530] cupsdAuthorize: Authorized as pkp using PeerCred
D [10/Oct/2011:00:34:44 +0530] cupsdReadClient: 13 1.1 Get-Notifications 1
D [10/Oct/2011:00:34:44 +0530] Get-Notifications /
D [10/Oct/2011:00:34:44 +0530] cupsdIsAuthorized: username="pkp"
D [10/Oct/2011:00:34:44 +0530] Returning IPP successful-ok for Get-Notifications (/) from localhost
D [10/Oct/2011:00:34:44 +0530] cupsdSetBusyState: Printing jobs and dirty files
D [10/Oct/2011:00:34:49 +0530] cupsdAcceptClient: 21 from localhost (Domain)
D [10/Oct/2011:00:34:49 +0530] cupsdReadClient: 21 POST /printers/Canon-LBP2900 HTTP/1.1
D [10/Oct/2011:00:34:49 +0530] cupsdSetBusyState: Active clients, printing jobs, and dirty files
D [10/Oct/2011:00:34:49 +0530] cupsdAuthorize: No authentication data provided.
D [10/Oct/2011:00:34:49 +0530] cupsdReadClient: 21 1.1 Print-Job 1
D [10/Oct/2011:00:34:49 +0530] Print-Job ipp://localhost/printers/Canon-LBP2900
D [10/Oct/2011:00:34:49 +0530] [Job ???] Auto-typing file...
I [10/Oct/2011:00:34:49 +0530] [Job ???] Request file type is application/vnd.cups-banner.
D [10/Oct/2011:00:34:49 +0530] cupsdMarkDirty(----J-)
D [10/Oct/2011:00:34:49 +0530] add_job: requesting-user-name="pkp"
D [10/Oct/2011:00:34:49 +0530] Adding default job-sheets values "none,none"...
I [10/Oct/2011:00:34:49 +0530] [Job 21] Adding start banner page "none".
D [10/Oct/2011:00:34:49 +0530] cupsdMarkDirty(-----S)
D [10/Oct/2011:00:34:49 +0530] cupsdMarkDirty(----J-)
I [10/Oct/2011:00:34:49 +0530] [Job 21] Adding end banner page "none".
I [10/Oct/2011:00:34:49 +0530] [Job 21] File of type application/vnd.cups-banner queued by "pkp".
D [10/Oct/2011:00:34:49 +0530] [Job 21] hold_until=0
I [10/Oct/2011:00:34:49 +0530] [Job 21] Queued on "Canon-LBP2900" by "pkp".
D [10/Oct/2011:00:34:49 +0530] Returning IPP successful-ok for Print-Job (ipp://localhost/printers/Canon-LBP2900) from localhost
D [10/Oct/2011:00:34:49 +0530] cupsdSetBusyState: Printing jobs and dirty files
D [10/Oct/2011:00:34:49 +0530] cupsdAcceptClient: 22 from localhost (Domain)
D [10/Oct/2011:00:34:49 +0530] cupsdReadClient: 22 POST / HTTP/1.1
D [10/Oct/2011:00:34:49 +0530] cupsdSetBusyState: Active clients, printing jobs, and dirty files
D [10/Oct/2011:00:34:49 +0530] cupsdAuthorize: No authentication data provided.
D [10/Oct/2011:00:34:49 +0530] cupsdReadClient: 22 1.1 Get-Notifications 1
D [10/Oct/2011:00:34:49 +0530] Get-Notifications /
D [10/Oct/2011:00:34:49 +0530] cupsdIsAuthorized: requesting-user-name="pkp"
D [10/Oct/2011:00:34:49 +0530] Returning IPP successful-ok for Get-Notifications (/) from localhost
D [10/Oct/2011:00:34:49 +0530] cupsdSetBusyState: Printing jobs and dirty files
D [10/Oct/2011:00:34:49 +0530] cupsdReadClient: 22 WAITING Closing on EOF
D [10/Oct/2011:00:34:49 +0530] cupsdCloseClient: 22
D [10/Oct/2011:00:34:49 +0530] cupsdReadClient: 13 POST / HTTP/1.1
D [10/Oct/2011:00:34:49 +0530] cupsdSetBusyState: Active clients, printing jobs, and dirty files
D [10/Oct/2011:00:34:49 +0530] cupsdAuthorize: Authorized as pkp using PeerCred
D [10/Oct/2011:00:34:49 +0530] cupsdReadClient: 13 1.1 Get-Notifications 1
D [10/Oct/2011:00:34:49 +0530] Get-Notifications /
D [10/Oct/2011:00:34:49 +0530] cupsdIsAuthorized: username="pkp"
D [10/Oct/2011:00:34:49 +0530] Returning IPP successful-ok for Get-Notifications (/) from localhost
D [10/Oct/2011:00:34:49 +0530] cupsdSetBusyState: Printing jobs and dirty files
D [10/Oct/2011:00:34:58 +0530] cupsdReadClient: 13 POST / HTTP/1.1
D [10/Oct/2011:00:34:58 +0530] cupsdSetBusyState: Active clients, printing jobs, and dirty files
D [10/Oct/2011:00:34:58 +0530] cupsdAuthorize: Authorized as pkp using PeerCred
D [10/Oct/2011:00:34:58 +0530] cupsdReadClient: 13 1.1 Get-Job-Attributes 1
D [10/Oct/2011:00:34:58 +0530] Get-Job-Attributes ipp://localhost/jobs/21
D [10/Oct/2011:00:34:58 +0530] Returning IPP successful-ok for Get-Job-Attributes (ipp://localhost/jobs/21) from localhost
D [10/Oct/2011:00:34:58 +0530] cupsdSetBusyState: Printing jobs and dirty files
D [10/Oct/2011:00:34:58 +0530] cupsdReadClient: 13 POST / HTTP/1.1
D [10/Oct/2011:00:34:58 +0530] cupsdSetBusyState: Active clients, printing jobs, and dirty files
D [10/Oct/2011:00:34:58 +0530] cupsdAuthorize: Authorized as pkp using PeerCred
D [10/Oct/2011:00:34:58 +0530] cupsdReadClient: 13 1.1 Cancel-Subscription 1
D [10/Oct/2011:00:34:58 +0530] Cancel-Subscription /
D [10/Oct/2011:00:34:58 +0530] cupsdIsAuthorized: username="pkp"
D [10/Oct/2011:00:34:58 +0530] cupsdMarkDirty(-----S)
D [10/Oct/2011:00:34:58 +0530] Returning IPP successful-ok for Cancel-Subscription (/) from localhost
D [10/Oct/2011:00:34:58 +0530] cupsdSetBusyState: Printing jobs and dirty files
D [10/Oct/2011:00:34:58 +0530] cupsdAcceptClient: 22 from localhost (Domain)
D [10/Oct/2011:00:34:58 +0530] cupsdReadClient: 22 GET /admin/log/error_log HTTP/1.1
D [10/Oct/2011:00:34:58 +0530] cupsdSetBusyState: Active clients, printing jobs, and dirty files
D [10/Oct/2011:00:34:58 +0530] cupsdAuthorize: No authentication data provided.