diff -u -p -w common/src/rtp.c common-beacon/src/rtp.c
--- common/src/rtp.c	2002-04-15 17:40:05.000000000 -0500
+++ common-beacon/src/rtp.c	2005-02-11 13:20:37.000000000 -0600
@@ -180,6 +180,7 @@ typedef struct _source {
 	int		 probation;
 	uint32_t	 jitter;
 	uint32_t	 transit;
+	uint32_t	 init;
 	uint32_t	 magic;			/* For debugging... */
 } source;
 
@@ -603,6 +604,7 @@ create_source(struct rtp *session, uint3
 	s = (source *) xmalloc(sizeof(source));
 	memset(s, 0, sizeof(source));
 	s->magic          = 0xc001feed;
+	s->init           = 0;
 	s->next           = session->db[h];
 	s->ssrc           = ssrc;
 	if (probation) {
@@ -735,6 +737,7 @@ init_seq(source *s, uint16_t seq)
 	s->received = 0;
 	s->received_prior = 0;
 	s->expected_prior = 0;
+	s->init = 1;
 }
 
 static int update_seq(source *s, uint16_t seq)
@@ -2341,6 +2344,8 @@ static int format_report_blocks(rtcp_rr 
 			if ((nblocks == 31) || (remaining_length < 24)) {
 				break; /* Insufficient space for more report blocks... */
 			}
+			if (!s->init) break;
+
 			if (s->sender) {
 				/* Much of this is taken from A.3 of draft-ietf-avt-rtp-new-01.txt */
 				int	extended_max      = s->cycles + s->max_seq;
diff -u -p -w common/src/rtp.h common-beacon/src/rtp.h
--- common/src/rtp.h	2002-04-15 17:40:05.000000000 -0500
+++ common-beacon/src/rtp.h	2005-02-11 13:22:50.000000000 -0600
@@ -41,7 +41,7 @@
 
 #define RTP_VERSION 2
 #define RTP_PACKET_HEADER_SIZE	((sizeof(char *) * 2) + sizeof(uint32_t *) + (2 * sizeof(int)))
-#define RTP_MAX_PACKET_LEN 1500
+#define RTP_MAX_PACKET_LEN 1440
 
 #if !defined(WORDS_BIGENDIAN) && !defined(WORDS_SMALLENDIAN)
 #error RTP library requires WORDS_BIGENDIAN or WORDS_SMALLENDIAN to be defined.