diff -up system-config-printer-1.1.13/cupshelpers/cupshelpers.py.install-foomatic-db-ppds system-config-printer-1.1.13/cupshelpers/cupshelpers.py
--- system-config-printer-1.1.13/cupshelpers/cupshelpers.py.install-foomatic-db-ppds	2009-09-04 10:34:16.000000000 +0100
+++ system-config-printer-1.1.13/cupshelpers/cupshelpers.py	2009-11-11 14:50:51.557767784 +0000
@@ -473,7 +473,10 @@ def parseDeviceID (id):
         id_dict.setdefault("CMD", id_dict["COMMAND SET"])
     for name in ["MFG", "MDL", "CMD", "CLS", "DES", "SN", "S", "P", "J"]:
         id_dict.setdefault(name, "")
-    id_dict["CMD"] = id_dict["CMD"].split(',') 
+    if id_dict["CMD"] == '':
+        id_dict["CMD"] = []
+    else:
+        id_dict["CMD"] = id_dict["CMD"].split(',') 
     return id_dict
 
 class Device:
diff -up system-config-printer-1.1.13/system-config-printer.py.install-foomatic-db-ppds system-config-printer-1.1.13/system-config-printer.py
--- system-config-printer-1.1.13/system-config-printer.py.install-foomatic-db-ppds	2009-11-11 14:50:33.835893883 +0000
+++ system-config-printer-1.1.13/system-config-printer.py	2009-11-11 14:50:51.560768061 +0000
@@ -4293,6 +4293,37 @@ class NewPrinterGUI(GtkGUI):
                     except:
                         nonfatalException ()
 
+                # Decide whether this might be a PostScript capable
+                # printer.  If it might be, check whether
+                # foomatic-db-ppds is installed and suggest installing
+                # it.
+                cmdsets = self.device.id_dict["CMD"]
+                if len (cmdsets) == 0:
+                    # No list of command sets available so might be PS capable
+                    may_be_ps = True
+                else:
+                    # We have the definitive list of command sets supported.
+                    # Only PS capable if it says so.
+                    may_be_ps = False
+                    for cmdset in cmdsets:
+                        if cmdset.lower ().startswith ("postscript"):
+                            may_be_ps = True
+
+                if may_be_ps:
+                    debugprint ("Printer might support PostScript")
+                    try:
+                        os.stat ("/usr/share/cups/model/foomatic-db-ppds")
+                        debugprint ("foomatic-db-ppds already installed")
+                    except OSError:
+                        debugprint ("foomatic-db-ppds not yet installed")
+                        pk = installpackage.PackageKit ()
+                        pid = None
+                        try:
+                            xid = self.mainapp.PrintersWindow.window.xid
+                            pk.InstallPackageName (xid, 0, "foomatic-db-ppds")
+                        except:
+                            pass
+
                 if (not self.remotecupsqueue and
                     not self.new_printer_PPDs_loaded):
                     try: