Comment 6 for bug 855026

These are CUPS' last words before its crash according to /var/log/cups/error_log (in debug mode);

D [20/Sep/2011:20:20:43 +0200] cupsdReadClient: 16 POST /admin/ HTTP/1.1
D [20/Sep/2011:20:20:43 +0200] cupsdSetBusyState: newbusy="Active clients", busy="Not busy"
D [20/Sep/2011:20:20:43 +0200] cupsdAuthorize: No authentication data provided.
D [20/Sep/2011:20:20:43 +0200] cupsdReadClient: 16 1.1 CUPS-Add-Modify-Printer 1
D [20/Sep/2011:20:20:43 +0200] CUPS-Add-Modify-Printer ipp://localhost/printers/0009
D [20/Sep/2011:20:20:43 +0200] cupsdIsAuthorized: username=""
D [20/Sep/2011:20:20:43 +0200] Returning HTTP Unauthorized for CUPS-Add-Modify-P
rinter (ipp://localhost/printers/0009) from localhost
D [20/Sep/2011:20:20:43 +0200] cupsdSendHeader: 16 WWW-Authenticate: Basic realm
="CUPS", trc="y"
D [20/Sep/2011:20:20:43 +0200] cupsdReadClient: 16 WAITING Closing on EOF
D [20/Sep/2011:20:20:43 +0200] cupsdCloseClient: 16
D [20/Sep/2011:20:20:43 +0200] cupsdSetBusyState: newbusy="Not busy", busy="Acti
ve clients"
D [20/Sep/2011:20:20:43 +0200] cupsdAcceptClient: 16 from localhost (Domain)
D [20/Sep/2011:20:20:43 +0200] cupsdAcceptClient: 19 from localhost (Domain)
D [20/Sep/2011:20:20:43 +0200] cupsdReadClient: 16 WAITING Closing on EOF
D [20/Sep/2011:20:20:43 +0200] cupsdCloseClient: 16
D [20/Sep/2011:20:20:43 +0200] cupsdSetBusyState: newbusy="Not busy", busy="Not
busy"
D [20/Sep/2011:20:20:43 +0200] cupsdReadClient: 19 POST /admin/ HTTP/1.1
D [20/Sep/2011:20:20:43 +0200] cupsdSetBusyState: newbusy="Active clients", busy
="Not busy"
D [20/Sep/2011:20:20:43 +0200] cupsdAuthorize: Authorized as till using PeerCred
D [20/Sep/2011:20:20:43 +0200] cupsdReadClient: 19 1.1 CUPS-Add-Modify-Printer 1
D [20/Sep/2011:20:20:43 +0200] CUPS-Add-Modify-Printer ipp://localhost/printers/
D [20/Sep/2011:20:20:43 +0200] cupsdIsAuthorized: username="till"
I [20/Sep/2011:20:20:43 +0200] Setting 0009 device-uri to "file:/tmp/printout" (
was "file:///dev/null".)
D [20/Sep/2011:20:20:43 +0200] cupsdMarkDirty(-----S)
D [20/Sep/2011:20:20:43 +0200] cupsdSetBusyState: newbusy="Active clients and di
rty files", busy="Active clients"
D [20/Sep/2011:20:20:43 +0200] cupsdMarkDirty(P-----)
D [20/Sep/2011:20:20:43 +0200] cupsdSetBusyState: newbusy="Active clients and dirty files", busy="Active clients and dirty files"
D [20/Sep/2011:20:20:43 +0200] cannot open /etc/cups/ppd/0009.ppd
D [20/Sep/2011:20:20:43 +0200] cupsdMarkDirty(P-----)
D [20/Sep/2011:20:20:43 +0200] cupsdSetBusyState: newbusy="Active clients and dirty files", busy="Active clients and dirty files"
D [20/Sep/2011:20:20:43 +0200] load_ppd: Loading /etc/cups/ppd/0009.ppd...
D [20/Sep/2011:20:20:43 +0200] Calling DeleteDevice(cups-0009)
D [20/Sep/2011:20:20:43 +0200] failed to DeleteDevice: org.freedesktop.DBus.Error.InvalidArgs:Type of message, `(s)', does not match expected type `(o)'
D [20/Sep/2011:20:20:43 +0200] cannot open /etc/cups/ppd/0009.ppd
D [20/Sep/2011:20:20:43 +0200] cupsdRegisterPrinter(p=0x7fe965c052e0(0009))