diff -urd ../linux-2.6.16-orig/net/ipv4/tcp_input.c ./net/ipv4/tcp_input.c
--- ../linux-2.6.16-orig/net/ipv4/tcp_input.c	2006-05-15 15:42:39.000000000 +0200
+++ ./net/ipv4/tcp_input.c	2006-05-16 11:18:21.000000000 +0200
@@ -1676,6 +1676,8 @@
 			if (!(TCP_SKB_CB(skb)->sacked&TCPCB_TAGBITS)) {
 				TCP_SKB_CB(skb)->sacked |= TCPCB_LOST;
 				tp->lost_out += tcp_skb_pcount(skb);
+				if (IsReno(tp)) 
+					tcp_remove_reno_sacks(sk, tp, tcp_skb_pcount(skb) + 1);
 
 				/* clear xmit_retrans hint */
 				if (tp->retransmit_skb_hint &&