diff -rup libvirt-0.2.2/src/xen_unified.c libvirt-0.2.2.new/src/xen_unified.c

--- libvirt-0.2.2/src/xen_unified.c	2007-04-17 04:38:52.000000000 -0400

+++ libvirt-0.2.2.new/src/xen_unified.c	2007-05-01 16:49:54.000000000 -0400

@@ -112,6 +112,11 @@ xenUnifiedOpen (virConnectPtr conn, cons

     for (i = 0; i < nb_drivers; ++i) {

         int failed_to_open = 1;

+        /* Only use XM driver for Xen <= 3.0.3 (ie xendConfigVersion <= 2) */

+        if (drivers[i] == &xenXMDriver &&

+            priv->xendConfigVersion > 2)

+            continue;

+

         /* Ignore proxy for root */

         if (i == proxy_offset && getuid() == 0)

             continue;