diff -Nru /tmp/FKomGJ7y1j/ubuntu-vm-builder-0.4ubuntu2~ppa5/ubuntu-vm-builder /tmp/OPbgpSDA69/ubuntu-vm-builder-0.4ubuntu2~ppa6/ubuntu-vm-builder
--- ubuntu-vm-builder-0.4ubuntu2~ppa5/ubuntu-vm-builder	2008-05-09 19:53:14.000000000 +0900
+++ ubuntu-vm-builder-0.4ubuntu2~ppa6/ubuntu-vm-builder	2008-05-10 01:27:43.000000000 +0900
@@ -1056,9 +1056,11 @@
                 rm ${DISKIMGS[$i]}.raw 
         done
 	popd > /dev/null
+	umount "$WORKINGDIR"
 	rm -rf "$WORKINGDIR"
 }
 
+mount -t tmpfs ubuntu-vm-builder -o suid,dev "$WORKINGDIR"
 pushd "$WORKINGDIR" > /dev/null
 
 do_disk_images