diff -up notification-daemon-0.3.7/src/daemon/daemon.c.orig notification-daemon-0.3.7/src/daemon/daemon.c
--- notification-daemon-0.3.7/src/daemon/daemon.c.orig	2007-02-15 12:47:09.000000000 +0200
+++ notification-daemon-0.3.7/src/daemon/daemon.c	2007-10-03 00:02:55.000000000 +0300
@@ -708,6 +708,14 @@ url_clicked_cb(GtkWindow *nw, const char
 	{
 		cmd = g_strdup_printf("gnome-open %s", escaped_url);
 	}
+	/*
+	 * Trying xdg-open only after gnome-open because it too is affected
+	 * by the unavailability of GNOME_DESKTOP_SESSION_ID internally.
+	 */
+	else if (g_find_program_in_path("xdg-open") != NULL)
+	{
+		cmd = g_strdup_printf("xdg-open %s", escaped_url);
+	}
 	else if (g_find_program_in_path("mozilla-firefox") != NULL)
 	{
 		cmd = g_strdup_printf("mozilla-firefox %s", escaped_url);