diff -up openssh-5.5p1/channels.c.x11 openssh-5.5p1/channels.c

--- openssh-5.5p1/channels.c.x11	2010-06-25 13:35:44.000000000 +0200

+++ openssh-5.5p1/channels.c	2010-06-25 13:40:40.000000000 +0200

@@ -3354,7 +3354,17 @@ static int

 connect_local_xsocket(u_int dnr)

 {

 	char buf[1024];

+#ifdef linux

+	int ret;

+#endif

 	snprintf(buf, sizeof buf, _PATH_UNIX_X, dnr);

+#ifdef linux

+	/* try abstract socket first */

+	buf[0] = '\0';

+	if ((ret = connect_local_xsocket_path(buf)) >= 0)

+		return ret;

+	buf[0] = '/';

+#endif

 	return connect_local_xsocket_path(buf);

 }