error log messages

D [11/May/2013:14:55:08 +0000] cupsdSetBusyState: newbusy="Dirty files", busy="Active clients and dirty files"
D [11/May/2013:14:55:08 +0000] [Client 14] POST / HTTP/1.1
D [11/May/2013:14:55:08 +0000] cupsdSetBusyState: newbusy="Active clients and dirty files", busy="Dirty files"
D [11/May/2013:14:55:08 +0000] [Client 14] No authentication data provided.
D [11/May/2013:14:55:08 +0000] [Client 14] 2.0 Get-Jobs 79
D [11/May/2013:14:55:08 +0000] Get-Jobs ipp://localhost/printers/
D [11/May/2013:14:55:08 +0000] [Job 4] Loading attributes...
D [11/May/2013:14:55:08 +0000] [Job 7] Loading attributes...
D [11/May/2013:14:55:08 +0000] Returning IPP successful-ok for Get-Jobs (ipp://localhost/printers/) from localhost
D [11/May/2013:14:55:08 +0000] cupsdSetBusyState: newbusy="Dirty files", busy="Active clients and dirty files"
D [11/May/2013:14:55:08 +0000] [Client 14] POST / HTTP/1.1
D [11/May/2013:14:55:08 +0000] cupsdSetBusyState: newbusy="Active clients and dirty files", busy="Dirty files"
D [11/May/2013:14:55:08 +0000] [Client 14] No authentication data provided.
D [11/May/2013:14:55:08 +0000] [Client 14] 2.0 Get-Jobs 80
D [11/May/2013:14:55:08 +0000] Get-Jobs ipp://localhost/printers/
D [11/May/2013:14:55:08 +0000] [Job 1] Loading attributes...
D [11/May/2013:14:55:08 +0000] [Job 2] Loading attributes...
D [11/May/2013:14:55:08 +0000] [Job 3] Loading attributes...
D [11/May/2013:14:55:08 +0000] [Job 5] Loading attributes...
D [11/May/2013:14:55:08 +0000] [Job 6] Loading attributes...
D [11/May/2013:14:55:08 +0000] Returning IPP successful-ok for Get-Jobs (ipp://localhost/printers/) from localhost
D [11/May/2013:14:55:08 +0000] [Job 1] Removing document files.
D [11/May/2013:14:55:08 +0000] cupsdSetBusyState: newbusy="Dirty files", busy="Active clients and dirty files"
D [11/May/2013:14:55:08 +0000] [Client 14] PUT /admin/conf/cupsd.conf HTTP/1.1
D [11/May/2013:14:55:08 +0000] cupsdSetBusyState: newbusy="Active clients and dirty files", busy="Dirty files"
D [11/May/2013:14:55:08 +0000] [Client 14] No authentication data provided.
D [11/May/2013:14:55:08 +0000] cupsdIsAuthorized: username=""
D [11/May/2013:14:55:08 +0000] [Client 14] WWW-Authenticate: Basic realm="CUPS", trc="y"
D [11/May/2013:14:55:08 +0000] [Client 14] Closing connection.
D [11/May/2013:14:55:08 +0000] cupsdSetBusyState: newbusy="Dirty files", busy="Active clients and dirty files"
D [11/May/2013:14:55:08 +0000] [Client 14] Accepted from localhost (Domain)
D [11/May/2013:14:55:08 +0000] [Client 14] PUT /admin/conf/cupsd.conf HTTP/1.1
D [11/May/2013:14:55:08 +0000] cupsdSetBusyState: newbusy="Active clients and dirty files", busy="Dirty files"
D [11/May/2013:14:55:08 +0000] [Client 14] Authorized as root using Basic
D [11/May/2013:14:55:08 +0000] cupsdIsAuthorized: username="root"
I [11/May/2013:14:55:08 +0000] Installing config file "/etc/cups/cupsd.conf"...
D [11/May/2013:14:55:09 +0000] cupsdSetBusyState: newbusy="Dirty files", busy="Active clients and dirty files"
D [11/May/2013:14:55:09 +0000] [Client 14] Closing connection.
D [11/May/2013:14:55:09 +0000] cupsdSetBusyState: newbusy="Dirty files", busy="Dirty files"
I [11/May/2013:14:55:09 +0000] Saving printers.conf...
I [11/May/2013:14:55:09 +0000] Generating printcap /etc/printcap...
I [11/May/2013:14:55:09 +0000] Saving subscriptions.conf...
D [11/May/2013:14:55:09 +0000] cupsdSetBusyState: newbusy="Not busy", busy="Dirty files"
E [11/May/2013:14:55:09 +0000] Unknown directive JobPrivateAccess on line 83 of /etc/cups/cupsd.conf.
E [11/May/2013:14:55:09 +0000] Unknown directive JobPrivateValues on line 84 of /etc/cups/cupsd.conf.
E [11/May/2013:14:55:09 +0000] Unknown directive SubscriptionPrivateAccess on line 86 of /etc/cups/cupsd.conf.
E [11/May/2013:14:55:09 +0000] Unknown directive SubscriptionPrivateValues on line 87 of /etc/cups/cupsd.conf.
E [11/May/2013:14:55:09 +0000] LBP2900-2: File "/usr/lib/cups/filter/pstocapt" not available: No such file or directory
W [11/May/2013:14:55:09 +0000] CreateProfile failed: org.freedesktop.ColorManager.AlreadyExists:profile id 'LBP2900-2-Gray..' already exists