Version:           4.6 (using KDE 4.6.4) 
OS:                FreeBSD

I have two remote CUPS printers (via cups-smb-backend) installed with CUPS.  These printers are visible from http://localhost:631, system-config-printer and  "Printer Configuration" module in systemsettings, and are printable from LibreOffice.  They, however, do not appear in any print dialogs from KDE programs (such as kate, kwrite, KMyMoney, Konqueror).  

This problem only occurred recently, after an upgrade of KDE.  

Reproducible: Always

Steps to Reproduce:
Display Print Dialog

Actual Results:  
Only Print to PDF/PS displayed

Expected Results:  
CUPS Printers also displayed

I have turned on all debugging options under kdebugdialog however did not see any output on the console for kwrite that indicated anything to do with printing or CUPS.  

Also the only relevant entry in ~/.xsession-errors is:
Traceback (most recent call last):
  File "/usr/local/bin/printer-applet", line 1153, in <module>
    applet = JobManager()
  File "/usr/local/bin/printer-applet", line 299, in __init__
    notification = NewPrinterNotification(bus, self)
  File "/usr/local/bin/printer-applet", line 1042, in __init__
    bus_name = dbus.service.BusName (PDS_OBJ, bus=bus)
  File "/usr/local/lib/python2.7/site-packages/dbus/service.py", line 129, in __new__
    retval = bus.request_name(name, name_flags)
  File "/usr/local/lib/python2.7/site-packages/dbus/bus.py", line 306, in request_name
    'su', (name, flags))
  File "/usr/local/lib/python2.7/site-packages/dbus/connection.py", line 630, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.AccessDenied: Connection ":1.111" is not allowed to own the service "com.redhat.NewPrinterNotification" due to security policies in the configuration file

There are no errors reported in /var/log/cups/error_log and only a single line (when KDE starts) in /var/log/cups/access_log:
localhost - - [26/Jun/2011:22:33:40 +0200] "POST / HTTP/1.1" 200 345 Create-Printer-Subscription successful-ok