Ok, habe also in der cupsd.conf (cupsd !?) den loglevel von "warn" auf "debug" gesetzt, dann cups neu gestartet als su mit Deinem Befehl. Jetzt ergibt der tail-Befehl folgendes:
Code
D [01/May/2013:21:27:10 +0200] Returning IPP successful-ok for CUPS-Get-Printers (no URI) from localhost
D [01/May/2013:21:27:10 +0200] cupsdSetBusyState: newbusy="Printing jobs", busy="Active clients and printing jobs"
D [01/May/2013:21:27:10 +0200] cupsdReadClient: 22 POST / HTTP/1.1
D [01/May/2013:21:27:10 +0200] cupsdSetBusyState: newbusy="Active clients and printing jobs", busy="Printing jobs"
D [01/May/2013:21:27:10 +0200] cupsdAuthorize: No authentication data provided.
D [01/May/2013:21:27:10 +0200] cupsdReadClient: 22 1.1 Get-Jobs 1
D [01/May/2013:21:27:10 +0200] Get-Jobs ipp://localhost/
D [01/May/2013:21:27:10 +0200] Returning IPP successful-ok for Get-Jobs (ipp://localhost/) from localhost
D [01/May/2013:21:27:10 +0200] cupsdSetBusyState: newbusy="Printing jobs", busy="Active clients and printing jobs"
D [01/May/2013:21:27:13 +0200] cupsdReadClient: 22 POST / HTTP/1.1
D [01/May/2013:21:27:13 +0200] cupsdSetBusyState: newbusy="Active clients and printing jobs", busy="Printing jobs"
D [01/May/2013:21:27:13 +0200] cupsdAuthorize: No authentication data provided.
D [01/May/2013:21:27:13 +0200] cupsdReadClient: 22 1.1 CUPS-Get-Printers 1
D [01/May/2013:21:27:13 +0200] CUPS-Get-Printers
D [01/May/2013:21:27:13 +0200] Returning IPP successful-ok for CUPS-Get-Printers (no URI) from localhost
D [01/May/2013:21:27:13 +0200] cupsdSetBusyState: newbusy="Printing jobs", busy="Active clients and printing jobs"
D [01/May/2013:21:27:13 +0200] cupsdReadClient: 22 POST / HTTP/1.1
D [01/May/2013:21:27:13 +0200] cupsdSetBusyState: newbusy="Active clients and printing jobs", busy="Printing jobs"
D [01/May/2013:21:27:13 +0200] cupsdAuthorize: No authentication data provided.
D [01/May/2013:21:27:13 +0200] cupsdReadClient: 22 1.1 CUPS-Get-Default 1
D [01/May/2013:21:27:13 +0200] CUPS-Get-Default
D [01/May/2013:21:27:13 +0200] Returning IPP successful-ok for CUPS-Get-Default (no URI) from localhost
D [01/May/2013:21:27:13 +0200] cupsdSetBusyState: newbusy="Printing jobs", busy="Active clients and printing jobs"
D [01/May/2013:21:27:17 +0200] cupsdReadClient: 15 WAITING Closing on EOF
D [01/May/2013:21:27:17 +0200] cupsdCloseClient: 15
D [01/May/2013:21:27:17 +0200] cupsdSetBusyState: newbusy="Printing jobs", busy="Printing jobs"
D [01/May/2013:21:27:17 +0200] cupsdReadClient: 16 WAITING Closing on EOF
D [01/May/2013:21:27:17 +0200] cupsdCloseClient: 16
D [01/May/2013:21:27:17 +0200] cupsdSetBusyState: newbusy="Printing jobs", busy="Printing jobs"
D [01/May/2013:21:27:17 +0200] cupsdReadClient: 17 WAITING Closing on EOF
D [01/May/2013:21:27:17 +0200] cupsdCloseClient: 17
D [01/May/2013:21:27:17 +0200] cupsdSetBusyState: newbusy="Printing jobs", busy="Printing jobs"
D [01/May/2013:21:27:17 +0200] cupsdReadClient: 18 WAITING Closing on EOF
D [01/May/2013:21:27:17 +0200] cupsdCloseClient: 18
D [01/May/2013:21:27:17 +0200] cupsdSetBusyState: newbusy="Printing jobs", busy="Printing jobs"
D [01/May/2013:21:27:17 +0200] cupsdReadClient: 19 WAITING Closing on EOF
D [01/May/2013:21:27:17 +0200] cupsdCloseClient: 19
D [01/May/2013:21:27:17 +0200] cupsdSetBusyState: newbusy="Printing jobs", busy="Printing jobs"
D [01/May/2013:21:27:17 +0200] cupsdReadClient: 20 WAITING Closing on EOF
D [01/May/2013:21:27:17 +0200] cupsdCloseClient: 20
D [01/May/2013:21:27:17 +0200] cupsdSetBusyState: newbusy="Printing jobs", busy="Printing jobs"
D [01/May/2013:21:27:17 +0200] cupsdReadClient: 21 WAITING Closing on EOF
D [01/May/2013:21:27:17 +0200] cupsdCloseClient: 21
D [01/May/2013:21:27:17 +0200] cupsdSetBusyState: newbusy="Printing jobs", busy="Printing jobs"
D [01/May/2013:21:27:17 +0200] cupsdReadClient: 22 WAITING Closing on EOF
D [01/May/2013:21:27:17 +0200] cupsdCloseClient: 22
D [01/May/2013:21:27:17 +0200] cupsdSetBusyState: newbusy="Printing jobs", busy="Printing jobs"
D [01/May/2013:21:27:17 +0200] cupsdReadClient: 23 WAITING Closing on EOF
D [01/May/2013:21:27:17 +0200] cupsdCloseClient: 23
D [01/May/2013:21:27:17 +0200] cupsdSetBusyState: newbusy="Printing jobs", busy="Printing jobs"
Alles anzeigen
Im HP Device Manager ist der letzte Firefox-Druckjob nach wie vor vorhanden. Soll ich den löschen und noch mal probieren?