My MacBook is not recognizing my USB audio input.

The hardware (Guitar Rig Session I/O) is lighting up (so it's drawing power) and System Profiler shows that it is attached to the USB, but says it is unconfigured. I've updated all my software (currently using OS X 10.5.8), but when I open System Preferences->Sound, it's not there.

Reset your SMC and PRAM.

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    I [05/Jul/2011:20:31:19 +0200] Listening to [v1.::1]:631 (IPv6)
    I [05/Jul/2011:20:31:19 +0200] Listening to 127.0.0.1:631 (IPv4)
    I [05/Jul/2011:20:31:19 +0200] Listening to /var/run/cups/cups.sock (Domain)
    I [05/Jul/2011:20:31:19 +0200] Remote access is disabled.
    D [05/Jul/2011:20:31:19 +0200] Added auto ServerAlias klapptop
    I [05/Jul/2011:20:31:19 +0200] Loaded configuration file "/etc/cups/cupsd.conf"
    I [05/Jul/2011:20:31:19 +0200] Using default TempDir of /var/spool/cups/tmp...
    I [05/Jul/2011:20:31:19 +0200] Configured for up to 100 clients.
    I [05/Jul/2011:20:31:19 +0200] Allowing up to 100 client connections per host.
    I [05/Jul/2011:20:31:19 +0200] Using policy "default" as the default!
    D [05/Jul/2011:20:31:19 +0200] load_ppd: Loading /var/cache/cups/Virtual_PDF_Printer.ipp4...
    D [05/Jul/2011:20:31:19 +0200] cupsdRegisterPrinter(p=0x7f8696d72660(Virtual_PDF_Printer))
    D [05/Jul/2011:20:31:19 +0200] cupsdMarkDirty(---p--)
    D [05/Jul/2011:20:31:19 +0200] cupsdSetBusyState: Dirty files
    I [05/Jul/2011:20:31:19 +0200] Partial reload complete.
    I [05/Jul/2011:20:31:19 +0200] Listening to [v1.::1]:631 on fd 3...
    I [05/Jul/2011:20:31:19 +0200] Listening to 127.0.0.1:631 on fd 6...
    I [05/Jul/2011:20:31:19 +0200] Listening to /var/run/cups/cups.sock on fd 7...
    I [05/Jul/2011:20:31:19 +0200] Resuming new connection processing...
    D [05/Jul/2011:20:31:19 +0200] cupsdRegisterPrinter(p=0x7f8696d72660(Virtual_PDF_Printer))
    D [05/Jul/2011:20:31:19 +0200] Discarding unused server-restarted event...
    D [05/Jul/2011:20:31:19 +0200] PID 1508 (/usr/lib/cups/cgi-bin/admin.cgi) exited with no errors.
    D [05/Jul/2011:20:31:20 +0200] Report: clients=0
    D [05/Jul/2011:20:31:20 +0200] Report: jobs=2
    D [05/Jul/2011:20:31:20 +0200] Report: jobs-active=0
    D [05/Jul/2011:20:31:20 +0200] Report: printers=1
    D [05/Jul/2011:20:31:20 +0200] Report: printers-implicit=0
    D [05/Jul/2011:20:31:20 +0200] Report: stringpool-string-count=859
    D [05/Jul/2011:20:31:20 +0200] Report: stringpool-alloc-bytes=9192
    D [05/Jul/2011:20:31:20 +0200] Report: stringpool-total-bytes=17984
    D [05/Jul/2011:20:31:24 +0200] cupsdAcceptClient: 11 from localhost:631 (IPv6)
    D [05/Jul/2011:20:31:24 +0200] cupsdReadClient: 11 GET /admin/?OP=redirect HTTP/1.1
    D [05/Jul/2011:20:31:24 +0200] cupsdSetBusyState: Active clients and dirty files
    D [05/Jul/2011:20:31:24 +0200] cupsdAuthorize: Authorized as root using Basic
    D [05/Jul/2011:20:31:24 +0200] [CGI] argv[0] = "/usr/lib/cups/cgi-bin/admin.cgi"
    D [05/Jul/2011:20:31:24 +0200] [CGI] argv[1] = "OP=redirect"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[0] = "CUPS_CACHEDIR=/var/cache/cups"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[1] = "CUPS_DATADIR=/usr/share/cups"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[2] = "CUPS_DOCROOT=/usr/share/cups/doc"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[3] = "CUPS_FONTPATH=/usr/share/cups/fonts"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[4] = "CUPS_REQUESTROOT=/var/spool/cups"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[5] = "CUPS_SERVERBIN=/usr/lib/cups"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[6] = "CUPS_SERVERROOT=/etc/cups"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[7] = "CUPS_STATEDIR=/var/run/cups"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[8] = "HOME=/var/spool/cups/tmp"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[9] = "PATH=/usr/lib/cups/filter:/usr/bin:/usr/sbin:/bin:/usr/bin"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[10] = "SERVER_ADMIN=root@klapptop"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[11] = "SOFTWARE=CUPS/1.4.7"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[12] = "TMPDIR=/var/spool/cups/tmp"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[13] = "USER=root"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[14] = "CUPS_SERVER=/var/run/cups/cups.sock"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[15] = "CUPS_ENCRYPTION=IfRequested"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[16] = "IPP_PORT=631"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[17] = "AUTH_TYPE=Basic"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[18] = "LANG=de.UTF8"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[19] = "REDIRECT_STATUS=1"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[20] = "GATEWAY_INTERFACE=CGI/1.1"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[21] = "SERVER_NAME=localhost"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[22] = "SERVER_PORT=631"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[23] = "REMOTE_ADDR=[v1.::1]"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[24] = "REMOTE_HOST=localhost"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[25] = "SCRIPT_NAME=/admin/"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[26] = "SCRIPT_FILENAME=/usr/share/cups/doc/admin/"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[27] = "REMOTE_USER=root"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[28] = "SERVER_PROTOCOL=HTTP/1.1"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[29] = "HTTP_COOKIE=org.cups.sid=8ecaff0f260930f93ef5e9dff799b7c7"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[30] = "HTTP_USER_AGENT=Mozilla/5.0 (X11; Linux x86_64; rv:5.0) Gecko/20100101 Firefox/5.0"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[31] = "REQUEST_METHOD=GET"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[32] = "QUERY_STRING=OP=redirect"
    D [05/Jul/2011:20:31:24 +0200] [CGI] Started /usr/lib/cups/cgi-bin/admin.cgi (PID 1509)
    I [05/Jul/2011:20:31:24 +0200] Started "/usr/lib/cups/cgi-bin/admin.cgi" (pid=1509)
    D [05/Jul/2011:20:31:24 +0200] cupsdSendCommand: 11 file=12
    D [05/Jul/2011:20:31:24 +0200] [CGI] admin.cgi started...
    D [05/Jul/2011:20:31:24 +0200] cupsdAcceptClient: 13 from localhost (Domain)
    D [05/Jul/2011:20:31:24 +0200] [CGI] http=0x7f1f946405c0
    D [05/Jul/2011:20:31:24 +0200] [CGI] org.cups.sid cookie is "8ecaff0f260930f93ef5e9dff799b7c7"
    D [05/Jul/2011:20:31:24 +0200] [CGI] redirecting with prefix http://localhost:631!
    D [05/Jul/2011:20:31:24 +0200] cupsdReadClient: 13 WAITING Closing on EOF
    D [05/Jul/2011:20:31:24 +0200] cupsdCloseClient: 13
    D [05/Jul/2011:20:31:24 +0200] Script header: Location: http://localhost:631/admin
    D [05/Jul/2011:20:31:24 +0200] Script header:
    D [05/Jul/2011:20:31:24 +0200] cupsdSetBusyState: Dirty files
    D [05/Jul/2011:20:31:24 +0200] PID 1509 (/usr/lib/cups/cgi-bin/admin.cgi) exited with no errors.
    D [05/Jul/2011:20:31:24 +0200] cupsdReadClient: 11 GET /admin HTTP/1.1
    D [05/Jul/2011:20:31:24 +0200] cupsdSetBusyState: Active clients and dirty files
    D [05/Jul/2011:20:31:24 +0200] cupsdAuthorize: No authentication data provided.
    D [05/Jul/2011:20:31:24 +0200] [CGI] argv[0] = "/usr/lib/cups/cgi-bin/admin.cgi"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[0] = "CUPS_CACHEDIR=/var/cache/cups"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[1] = "CUPS_DATADIR=/usr/share/cups"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[2] = "CUPS_DOCROOT=/usr/share/cups/doc"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[3] = "CUPS_FONTPATH=/usr/share/cups/fonts"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[4] = "CUPS_REQUESTROOT=/var/spool/cups"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[5] = "CUPS_SERVERBIN=/usr/lib/cups"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[6] = "CUPS_SERVERROOT=/etc/cups"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[7] = "CUPS_STATEDIR=/var/run/cups"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[8] = "HOME=/var/spool/cups/tmp"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[9] = "PATH=/usr/lib/cups/filter:/usr/bin:/usr/sbin:/bin:/usr/bin"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[10] = "SERVER_ADMIN=root@klapptop"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[11] = "SOFTWARE=CUPS/1.4.7"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[12] = "TMPDIR=/var/spool/cups/tmp"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[13] = "USER=root"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[14] = "CUPS_SERVER=/var/run/cups/cups.sock"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[15] = "CUPS_ENCRYPTION=IfRequested"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[16] = "IPP_PORT=631"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[17] = "LANG=de.UTF8"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[18] = "REDIRECT_STATUS=1"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[19] = "GATEWAY_INTERFACE=CGI/1.1"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[20] = "SERVER_NAME=localhost"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[21] = "SERVER_PORT=631"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[22] = "REMOTE_ADDR=[v1.::1]"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[23] = "REMOTE_HOST=localhost"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[24] = "SCRIPT_NAME=/admin"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[25] = "SCRIPT_FILENAME=/usr/share/cups/doc/admin"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[26] = "SERVER_PROTOCOL=HTTP/1.1"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[27] = "HTTP_COOKIE=org.cups.sid=8ecaff0f260930f93ef5e9dff799b7c7"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[28] = "HTTP_USER_AGENT=Mozilla/5.0 (X11; Linux x86_64; rv:5.0) Gecko/20100101 Firefox/5.0"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[29] = "REQUEST_METHOD=GET"
    D [05/Jul/2011:20:31:24 +0200] [CGI] envp[30] = "QUERY_STRING="
    D [05/Jul/2011:20:31:24 +0200] [CGI] Started /usr/lib/cups/cgi-bin/admin.cgi (PID 1510)
    I [05/Jul/2011:20:31:24 +0200] Started "/usr/lib/cups/cgi-bin/admin.cgi" (pid=1510)
    D [05/Jul/2011:20:31:24 +0200] cupsdSendCommand: 11 file=12
    D [05/Jul/2011:20:31:24 +0200] [CGI] admin.cgi started...
    D [05/Jul/2011:20:31:24 +0200] cupsdAcceptClient: 13 from localhost (Domain)
    D [05/Jul/2011:20:31:24 +0200] [CGI] http=0x7f7248b935c0
    D [05/Jul/2011:20:31:24 +0200] [CGI] org.cups.sid cookie is "8ecaff0f260930f93ef5e9dff799b7c7"
    D [05/Jul/2011:20:31:24 +0200] [CGI] No form data, showing main menu...
    D [05/Jul/2011:20:31:24 +0200] [CGI] /usr/share/cups/drivers/pscript5.dll: No such file or directory
    D [05/Jul/2011:20:31:24 +0200] cupsdReadClient: 13 POST / HTTP/1.1
    D [05/Jul/2011:20:31:24 +0200] cupsdAuthorize: No authentication data provided.
    D [05/Jul/2011:20:31:24 +0200] cupsdReadClient: 13 1.1 Get-Subscriptions 1
    D [05/Jul/2011:20:31:24 +0200] Get-Subscriptions ipp://localhost/
    D [05/Jul/2011:20:31:24 +0200] Returning IPP successful-ok for Get-Subscriptions (ipp://localhost/) from localhost
    D [05/Jul/2011:20:31:24 +0200] Script header: Content-Type: text/html;charset=utf-8
    D [05/Jul/2011:20:31:24 +0200] Script header:
    D [05/Jul/2011:20:31:24 +0200] cupsdReadClient: 13 WAITING Closing on EOF
    D [05/Jul/2011:20:31:24 +0200] cupsdCloseClient: 13
    D [05/Jul/2011:20:31:24 +0200] cupsdSetBusyState: Dirty files
    D [05/Jul/2011:20:31:24 +0200] PID 1510 (/usr/lib/cups/cgi-bin/admin.cgi) exited with no errors.
    D [05/Jul/2011:20:31:30 +0200] cupsdReadClient: 11 POST /admin/ HTTP/1.1
    D [05/Jul/2011:20:31:30 +0200] cupsdSetBusyState: Active clients and dirty files
    D [05/Jul/2011:20:31:30 +0200] cupsdAuthorize: Authorized as root using Basic
    D [05/Jul/2011:20:31:30 +0200] [CGI] argv[0] = "/usr/lib/cups/cgi-bin/admin.cgi"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[0] = "CUPS_CACHEDIR=/var/cache/cups"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[1] = "CUPS_DATADIR=/usr/share/cups"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[2] = "CUPS_DOCROOT=/usr/share/cups/doc"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[3] = "CUPS_FONTPATH=/usr/share/cups/fonts"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[4] = "CUPS_REQUESTROOT=/var/spool/cups"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[5] = "CUPS_SERVERBIN=/usr/lib/cups"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[6] = "CUPS_SERVERROOT=/etc/cups"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[7] = "CUPS_STATEDIR=/var/run/cups"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[8] = "HOME=/var/spool/cups/tmp"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[9] = "PATH=/usr/lib/cups/filter:/usr/bin:/usr/sbin:/bin:/usr/bin"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[10] = "SERVER_ADMIN=root@klapptop"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[11] = "SOFTWARE=CUPS/1.4.7"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[12] = "TMPDIR=/var/spool/cups/tmp"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[13] = "USER=root"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[14] = "CUPS_SERVER=/var/run/cups/cups.sock"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[15] = "CUPS_ENCRYPTION=IfRequested"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[16] = "IPP_PORT=631"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[17] = "AUTH_TYPE=Basic"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[18] = "LANG=de.UTF8"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[19] = "REDIRECT_STATUS=1"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[20] = "GATEWAY_INTERFACE=CGI/1.1"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[21] = "SERVER_NAME=localhost"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[22] = "SERVER_PORT=631"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[23] = "REMOTE_ADDR=[v1.::1]"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[24] = "REMOTE_HOST=localhost"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[25] = "SCRIPT_NAME=/admin/"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[26] = "SCRIPT_FILENAME=/usr/share/cups/doc/admin/"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[27] = "REMOTE_USER=root"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[28] = "SERVER_PROTOCOL=HTTP/1.1"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[29] = "HTTP_COOKIE=org.cups.sid=8ecaff0f260930f93ef5e9dff799b7c7"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[30] = "HTTP_USER_AGENT=Mozilla/5.0 (X11; Linux x86_64; rv:5.0) Gecko/20100101 Firefox/5.0"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[31] = "HTTP_REFERER=http://localhost:631/admin"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[32] = "REQUEST_METHOD=POST"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[33] = "CONTENT_LENGTH=60"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[34] = "CONTENT_TYPE=application/x-www-form-urlencoded"
    D [05/Jul/2011:20:31:30 +0200] [CGI] Started /usr/lib/cups/cgi-bin/admin.cgi (PID 1511)
    I [05/Jul/2011:20:31:30 +0200] Started "/usr/lib/cups/cgi-bin/admin.cgi" (pid=1511)
    D [05/Jul/2011:20:31:30 +0200] cupsdSendCommand: 11 file=13
    D [05/Jul/2011:20:31:30 +0200] [CGI] admin.cgi started...
    D [05/Jul/2011:20:31:30 +0200] cupsdAcceptClient: 14 from localhost (Domain)
    D [05/Jul/2011:20:31:30 +0200] [CGI] http=0x7f2a6b99e5c0
    D [05/Jul/2011:20:31:30 +0200] [CGI] org.cups.sid cookie is "8ecaff0f260930f93ef5e9dff799b7c7"
    D [05/Jul/2011:20:31:30 +0200] [CGI] op="add-printer"...
    D [05/Jul/2011:20:31:30 +0200] [CGI] do_am_printer: DEVICE_URI="(null)"
    D [05/Jul/2011:20:31:30 +0200] [CGI] Getting list of devices...
    D [05/Jul/2011:20:31:30 +0200] cupsdReadClient: 14 POST / HTTP/1.1
    D [05/Jul/2011:20:31:30 +0200] cupsdAuthorize: No authentication data provided.
    D [05/Jul/2011:20:31:30 +0200] cupsdReadClient: 14 1.1 CUPS-Get-Devices 1
    D [05/Jul/2011:20:31:30 +0200] CUPS-Get-Devices
    D [05/Jul/2011:20:31:30 +0200] cupsdIsAuthorized: username=""
    D [05/Jul/2011:20:31:30 +0200] Returning HTTP Unauthorized for CUPS-Get-Devices (no URI) from localhost
    D [05/Jul/2011:20:31:30 +0200] cupsdSendHeader: 14 WWW-Authenticate: Basic realm="CUPS", trc="y"
    D [05/Jul/2011:20:31:30 +0200] cupsdReadClient: 14 WAITING Closing on EOF
    D [05/Jul/2011:20:31:30 +0200] cupsdCloseClient: 14
    D [05/Jul/2011:20:31:30 +0200] cupsdAcceptClient: 14 from localhost (Domain)
    D [05/Jul/2011:20:31:30 +0200] cupsdReadClient: 14 WAITING Closing on EOF
    D [05/Jul/2011:20:31:30 +0200] cupsdCloseClient: 14
    D [05/Jul/2011:20:31:30 +0200] cupsdAcceptClient: 14 from localhost (Domain)
    D [05/Jul/2011:20:31:30 +0200] cupsdReadClient: 14 POST / HTTP/1.1
    D [05/Jul/2011:20:31:30 +0200] cupsdAuthorize: Authorized as root using Local
    D [05/Jul/2011:20:31:30 +0200] cupsdReadClient: 14 1.1 CUPS-Get-Devices 1
    D [05/Jul/2011:20:31:30 +0200] CUPS-Get-Devices
    D [05/Jul/2011:20:31:30 +0200] cupsdIsAuthorized: username="root"
    D [05/Jul/2011:20:31:30 +0200] [CGI] argv[0] = "/usr/lib/cups/daemon/cups-deviced"
    D [05/Jul/2011:20:31:30 +0200] [CGI] argv[1] = "1"
    D [05/Jul/2011:20:31:30 +0200] [CGI] argv[2] = "0"
    D [05/Jul/2011:20:31:30 +0200] [CGI] argv[3] = "5"
    D [05/Jul/2011:20:31:30 +0200] [CGI] argv[4] = "2"
    D [05/Jul/2011:20:31:30 +0200] [CGI] argv[5] = "requested-attributes=all"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[0] = "CUPS_CACHEDIR=/var/cache/cups"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[1] = "CUPS_DATADIR=/usr/share/cups"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[2] = "CUPS_DOCROOT=/usr/share/cups/doc"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[3] = "CUPS_FONTPATH=/usr/share/cups/fonts"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[4] = "CUPS_REQUESTROOT=/var/spool/cups"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[5] = "CUPS_SERVERBIN=/usr/lib/cups"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[6] = "CUPS_SERVERROOT=/etc/cups"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[7] = "CUPS_STATEDIR=/var/run/cups"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[8] = "HOME=/var/spool/cups/tmp"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[9] = "PATH=/usr/lib/cups/filter:/usr/bin:/usr/sbin:/bin:/usr/bin"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[10] = "SERVER_ADMIN=root@klapptop"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[11] = "SOFTWARE=CUPS/1.4.7"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[12] = "TMPDIR=/var/spool/cups/tmp"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[13] = "USER=root"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[14] = "CUPS_SERVER=/var/run/cups/cups.sock"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[15] = "CUPS_ENCRYPTION=IfRequested"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[16] = "IPP_PORT=631"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[17] = "AUTH_TYPE=Local"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[18] = "LANG=de.UTF8"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[19] = "REDIRECT_STATUS=1"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[20] = "GATEWAY_INTERFACE=CGI/1.1"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[21] = "SERVER_NAME=localhost"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[22] = "SERVER_PORT=631"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[23] = "REMOTE_ADDR="
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[24] = "REMOTE_HOST=localhost"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[25] = "SCRIPT_NAME=/"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[26] = "SCRIPT_FILENAME=/usr/share/cups/doc/"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[27] = "REMOTE_USER=root"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[28] = "SERVER_PROTOCOL=HTTP/1.1"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[29] = "HTTP_USER_AGENT=CUPS/1.4.7"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[30] = "REQUEST_METHOD=POST"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[31] = "CONTENT_LENGTH=88"
    D [05/Jul/2011:20:31:30 +0200] [CGI] envp[32] = "CONTENT_TYPE=application/ipp"
    D [05/Jul/2011:20:31:30 +0200] [CGI] Started /usr/lib/cups/daemon/cups-deviced (PID 1512)
    I [05/Jul/2011:20:31:30 +0200] Started "/usr/lib/cups/daemon/cups-deviced" (pid=1512)
    D [05/Jul/2011:20:31:30 +0200] cupsdSendCommand: 14 file=15
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Started backend /usr/lib/cups/backend/http (PID 1513)
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Started backend /usr/lib/cups/backend/socket (PID 1514)
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Started backend /usr/lib/cups/backend/snmp (PID 1515)
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Started backend /usr/lib/cups/backend/mdns (PID 1516)
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Started backend /usr/lib/cups/backend/usb (PID 1517)
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Started backend /usr/lib/cups/backend/smb (PID 1518)
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Started backend /usr/lib/cups/backend/lpd (PID 1519)
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Started backend /usr/lib/cups/backend/beh (PID 1520)
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Started backend /usr/lib/cups/backend/dnssd (PID 1521)
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Started backend /usr/lib/cups/backend/scsi (PID 1522)
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Started backend /usr/lib/cups/backend/serial (PID 1523)
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Started backend /usr/lib/cups/backend/cups-pdf (PID 1524)
    D [05/Jul/2011:20:31:30 +0200] [CGI] list_devices
    D [05/Jul/2011:20:31:30 +0200] [CGI] usb_find_busses=6
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Started backend /usr/lib/cups/backend/parallel (PID 1525)
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Started backend /usr/lib/cups/backend/bluetooth (PID 1526)
    D [05/Jul/2011:20:31:30 +0200] [CGI] perl: warning: Setting locale failed.
    D [05/Jul/2011:20:31:30 +0200] [CGI] perl: warning: Please check that your locale settings:
    D [05/Jul/2011:20:31:30 +0200] [CGI] LANGUAGE = (unset),
    D [05/Jul/2011:20:31:30 +0200] [CGI] LC_ALL = (unset),
    D [05/Jul/2011:20:31:30 +0200] [CGI] LANG = "de.UTF8"
    D [05/Jul/2011:20:31:30 +0200] [CGI] are supported and installed on your system.
    D [05/Jul/2011:20:31:30 +0200] [CGI] perl: warning: Falling back to the standard locale ("C").
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Started backend /usr/lib/cups/backend/ipp (PID 1527)
    D [05/Jul/2011:20:31:30 +0200] Script header: Content-Type: application/ipp
    D [05/Jul/2011:20:31:30 +0200] Script header:
    D [05/Jul/2011:20:31:30 +0200] [CGI] Flushed attributes...
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Found device "http"...
    D [05/Jul/2011:20:31:30 +0200] [CGI] Flushed attributes...
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Found device "socket"...
    D [05/Jul/2011:20:31:30 +0200] [CGI] Flushed attributes...
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Found device "smb"...
    D [05/Jul/2011:20:31:30 +0200] [CGI] Flushed attributes...
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Found device "beh"...
    D [05/Jul/2011:20:31:30 +0200] [CGI] Flushed attributes...
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Found device "cups-pdf:/"...
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] PID 1514 (socket) exited with no errors.
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] PID 1516 (mdns) exited with no errors.
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] PID 1518 (smb) exited with no errors.
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] PID 1520 (beh) exited with no errors.
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] PID 1524 (cups-pdf) exited with no errors.
    D [05/Jul/2011:20:31:30 +0200] [CGI] Flushed attributes...
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Found device "lpd"...
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] PID 1513 (http) exited with no errors.
    E [05/Jul/2011:20:31:30 +0200] [CGI] Unable to create avahi client: Resource temporarily unavailable
    E [05/Jul/2011:20:31:30 +0200] [cups-deviced] PID 1521 (dnssd) stopped with status 1!
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] PID 1525 (parallel) exited with no errors.
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] PID 1522 (scsi) exited with no errors.
    D [05/Jul/2011:20:31:30 +0200] [CGI] Flushed attributes...
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Found device "scsi"...
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] PID 1526 (bluetooth) exited with no errors.
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] PID 1519 (lpd) exited with no errors.
    D [05/Jul/2011:20:31:30 +0200] [CGI] Flushed attributes...
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] Found device "ipp"...
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] PID 1527 (ipp) exited with no errors.
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] PID 1523 (serial) exited with no errors.
    D [05/Jul/2011:20:31:30 +0200] [CGI] usb_find_devices=9
    D [05/Jul/2011:20:31:30 +0200] [cups-deviced] PID 1517 (usb) exited with no errors.
    D [05/Jul/2011:20:31:32 +0200] [cups-deviced] PID 1515 (snmp) exited with no errors.
    D [05/Jul/2011:20:31:32 +0200] PID 1512 (/usr/lib/cups/daemon/cups-deviced) exited with no errors.
    D [05/Jul/2011:20:31:32 +0200] [CGI] Got device list!
    D [05/Jul/2011:20:31:32 +0200] cupsdReadClient: 14 WAITING Closing on EOF
    D [05/Jul/2011:20:31:32 +0200] cupsdCloseClient: 14
    D [05/Jul/2011:20:31:32 +0200] PID 1511 (/usr/lib/cups/cgi-bin/admin.cgi) exited with no errors.
    D [05/Jul/2011:20:31:32 +0200] Script header: Content-Type: text/html;charset=utf-8
    D [05/Jul/2011:20:31:32 +0200] Script header:
    D [05/Jul/2011:20:31:32 +0200] cupsdSetBusyState: Dirty files
    D [05/Jul/2011:20:31:32 +0200] [CGI] Regular expression "[a-z]+://"
    D [05/Jul/2011:20:31:32 +0200] [CGI] Regular expression "[a-z]+://"
    D [05/Jul/2011:20:31:32 +0200] [CGI] Regular expression "[a-z]+://"
    D [05/Jul/2011:20:31:32 +0200] [CGI] Regular expression "[a-z]+://"
    D [05/Jul/2011:20:31:32 +0200] [CGI] Regular expression "[a-z]+://"
    D [05/Jul/2011:20:31:32 +0200] [CGI] Regular expression "[a-z]+://"
    D [05/Jul/2011:20:31:32 +0200] [CGI] Regular expression "[a-z]+://"
    D [05/Jul/2011:20:31:32 +0200] [CGI] Regular expression "[a-z]+://"
    D [05/Jul/2011:20:31:32 +0200] [CGI] Regular expression "[a-z]+://"
    D [05/Jul/2011:20:31:32 +0200] [CGI] Regular expression "[a-z]+://"
    D [05/Jul/2011:20:31:32 +0200] [CGI] Regular expression "[a-z]+://"
    D [05/Jul/2011:20:31:32 +0200] [CGI] Regular expression "[a-z]+://"
    D [05/Jul/2011:20:31:32 +0200] [CGI] Regular expression "[a-z]+://"
    D [05/Jul/2011:20:31:32 +0200] [CGI] Regular expression "[a-z]+://"
    D [05/Jul/2011:20:31:32 +0200] [CGI] Regular expression "[a-z]+://"
    D [05/Jul/2011:20:31:32 +0200] [CGI] Regular expression "[a-z]+://"
    I [05/Jul/2011:20:31:50 +0200] Generating printcap /etc/printcap...
    D [05/Jul/2011:20:31:50 +0200] cupsdSetBusyState: Not busy
    D [05/Jul/2011:20:32:02 +0200] cupsdReadClient: 11 WAITING Closing on EOF
    D [05/Jul/2011:20:32:02 +0200] cupsdCloseClient: 11

    I have gotten around to give this printer another try and when i connected it and read through /var/log/cups/error_log i noticed 2 lines close to the end that seem to be the problem:
    D [24/Aug/2011:12:42:23 +0200] [CGI] libusb couldn't open USB device /dev/bus/usb/002/006: Permission denied.
    D [24/Aug/2011:12:42:23 +0200] [CGI] libusb requires write access to USB device nodes.
    i checked the permissions, but they seem to be allright:
    $ ls -l /dev/bus/usb/002/006
    crw-rw-r--+ 1 root scanner 189, 133 24. Aug 12:42 /dev/bus/usb/002/006
    $ id
    ...,7(lp),10(wheel),96(scanner),97(camera)
    here is the complete part of error_log from connecting the printer:
    D [24/Aug/2011:12:42:23 +0200] cupsdAcceptClient: 12 from localhost (Domain)
    D [24/Aug/2011:12:42:23 +0200] Report: clients=1
    D [24/Aug/2011:12:42:23 +0200] Report: jobs=2
    D [24/Aug/2011:12:42:23 +0200] Report: jobs-active=0
    D [24/Aug/2011:12:42:23 +0200] Report: printers=1
    D [24/Aug/2011:12:42:23 +0200] Report: printers-implicit=0
    D [24/Aug/2011:12:42:23 +0200] Report: stringpool-string-count=859
    D [24/Aug/2011:12:42:23 +0200] Report: stringpool-alloc-bytes=9192
    D [24/Aug/2011:12:42:23 +0200] Report: stringpool-total-bytes=17984
    D [24/Aug/2011:12:42:23 +0200] cupsdReadClient: 12 POST / HTTP/1.1
    D [24/Aug/2011:12:42:23 +0200] cupsdSetBusyState: Active clients
    D [24/Aug/2011:12:42:23 +0200] cupsdAuthorize: No authentication data provided.
    D [24/Aug/2011:12:42:23 +0200] cupsdReadClient: 12 1.1 CUPS-Get-Devices 1
    D [24/Aug/2011:12:42:23 +0200] CUPS-Get-Devices
    D [24/Aug/2011:12:42:23 +0200] cupsdIsAuthorized: username=""
    D [24/Aug/2011:12:42:23 +0200] Returning HTTP Unauthorized for CUPS-Get-Devices (no URI) from localhost
    D [24/Aug/2011:12:42:23 +0200] cupsdSendHeader: 12 WWW-Authenticate: Basic realm="CUPS", trc="y"
    D [24/Aug/2011:12:42:23 +0200] cupsdReadClient: 12 WAITING Closing on EOF
    D [24/Aug/2011:12:42:23 +0200] cupsdCloseClient: 12
    D [24/Aug/2011:12:42:23 +0200] cupsdSetBusyState: Not busy
    D [24/Aug/2011:12:42:23 +0200] cupsdAcceptClient: 12 from localhost (Domain)
    D [24/Aug/2011:12:42:23 +0200] cupsdReadClient: 12 WAITING Closing on EOF
    D [24/Aug/2011:12:42:23 +0200] cupsdCloseClient: 12
    D [24/Aug/2011:12:42:23 +0200] cupsdAcceptClient: 12 from localhost (Domain)
    D [24/Aug/2011:12:42:23 +0200] cupsdReadClient: 12 POST / HTTP/1.1
    D [24/Aug/2011:12:42:23 +0200] cupsdSetBusyState: Active clients
    D [24/Aug/2011:12:42:23 +0200] cupsdAuthorize: Authorized as root using PeerCred
    D [24/Aug/2011:12:42:23 +0200] cupsdReadClient: 12 1.1 CUPS-Get-Devices 1
    D [24/Aug/2011:12:42:23 +0200] CUPS-Get-Devices
    D [24/Aug/2011:12:42:23 +0200] cupsdIsAuthorized: username="root"
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    D [24/Aug/2011:12:42:23 +0200] [CGI] argv[3] = "2"
    D [24/Aug/2011:12:42:23 +0200] [CGI] argv[4] = "2"
    D [24/Aug/2011:12:42:23 +0200] [CGI] argv[5] = "requested-attributes=all exclude-schemes='beh','cups-pdf','bluetooth','dnssd','http','https','ipp','lpd','ncp','parallel','scsi','smb','snmp','socket'"
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    D [24/Aug/2011:12:42:23 +0200] [CGI] envp[17] = "AUTH_TYPE=PeerCred"
    D [24/Aug/2011:12:42:23 +0200] [CGI] envp[18] = "LANG=en_US.UTF8"
    D [24/Aug/2011:12:42:23 +0200] [CGI] envp[19] = "REDIRECT_STATUS=1"
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    D [24/Aug/2011:12:42:23 +0200] [CGI] envp[30] = "REQUEST_METHOD=POST"
    D [24/Aug/2011:12:42:23 +0200] [CGI] envp[31] = "CONTENT_LENGTH=244"
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