diff -rup virtinst-0.300.3.orig/virtinst/Guest.py virtinst-0.300.3.new/virtinst/Guest.py
--- virtinst-0.300.3.orig/virtinst/Guest.py	2008-03-10 19:51:43.000000000 -0400
+++ virtinst-0.300.3.new/virtinst/Guest.py	2008-05-09 13:01:06.000000000 -0400
@@ -478,7 +478,7 @@ class Installer(object):
     def get_scratchdir(self):
         if self.type == "xen":
             return "/var/lib/xen"
-        return "/var/tmp"
+        return "/var/lib/libvirt/boot"
     scratchdir = property(get_scratchdir)
 
     def get_cdrom(self):