diff --git a/python-virtinst-0.300.0-transient-qemu.patch b/python-virtinst-0.300.0-transient-qemu.patch
new file mode 100644
index 0000000..e9c30d6
--- /dev/null
+++ b/python-virtinst-0.300.0-transient-qemu.patch
@@ -0,0 +1,18 @@
+diff -rup virtinst-0.300.0.orig/virtinst/FullVirtGuest.py virtinst-0.300.0.new/virtinst/FullVirtGuest.py
+--- virtinst-0.300.0.orig/virtinst/FullVirtGuest.py	2007-09-19 15:19:16.000000000 -0400
++++ virtinst-0.300.0.new/virtinst/FullVirtGuest.py	2007-09-19 15:19:28.000000000 -0400
+@@ -273,10 +273,13 @@ class FullVirtGuest(Guest.XenGuest):
+         for d in self.disks:
+             saved_path = None
+             if d.device == Guest.VirtualDisk.DEVICE_CDROM and d.transient and not install:
+-                # XXX hack. libvirt can't currently handle QEMU having an empty disk path
++                # XXX hack. libvirt can't currently handle QEMU having an empty disk path..
+                 if self.type == "xen":
+                     saved_path = d.path
+                     d.path = None
++                else:
++                    # .. so simply remove CDROM device completely in non-Xen
++                    continue
+ 
+             ret += d.get_xml_config(d.target)
+             if saved_path != None:
diff --git a/python-virtinst.spec b/python-virtinst.spec
index 402ead1..e72e63d 100644
--- a/python-virtinst.spec
+++ b/python-virtinst.spec
@@ -11,10 +11,11 @@
 Summary: Python modules for starting Xen guest installations
 Name: python-%{appname}
 Version: 0.300.0
-Release: 3%{_extra_release}
+Release: 4%{_extra_release}
 Source0: http://virt-manager.org/download/sources/%{appname}/%{appname}-%{version}.tar.gz
 Patch1: %{name}-%{version}-fedora8-distro.patch
 Patch2: %{name}-0.200.0-default-arch.patch
+Patch3: %{name}-%{version}-transient-qemu.patch
 License: GPL
 Group: Development/Libraries
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
@@ -39,6 +40,7 @@ virtinst in a command line mode.
 %setup -q -n %{appname}-%{version}
 %patch1 -p1
 %patch2 -p1
+%patch3 -p1
 
 %build
 python setup.py build
@@ -68,6 +70,9 @@ rm -rf $RPM_BUILD_ROOT
 %{_bindir}/virt-image
 
 %changelog
+* Wed Sep 19 2007 Daniel P. Berrange <berrange@redhat.com> - 0.300.0-4.fc8
+- Fix post install CDROM config for KVM guests
+
 * Tue Sep 11 2007 Daniel P. Berrange <berrange@redhat.com> - 0.300.0-3.fc8
 - Fixed default architecture. Again.