diff -urN squid-2.5.STABLE9.orig/src/http.c squid-2.5.STABLE9-epoll/src/http.c
--- squid-2.5.STABLE9.orig/src/http.c	Tue Mar 15 16:17:03 2005
+++ squid-2.5.STABLE9-epoll/src/http.c	Thu Mar 17 07:42:52 2005
@@ -579,7 +579,24 @@
 	comm_close(fd);
 	return;
     }
-    /* check if we want to defer reading */
+    /* check if we want to defer reading (this stops squid from using too much memory for in-transit objects */
+    /* If the object has no swapout entry, and the memory foortprint is too big */
+    if( (!(entry->mem_obj->swapout.sio)) && ((entry->mem_obj->inmem_hi - entry->mem_obj->inmem_lo) > READ_AHEAD_GAP) ) {
+	/* Flush written data out of memory */
+	storeSwapOut(entry);
+
+	if((entry->mem_obj->inmem_hi - entry->mem_obj->inmem_lo) > READ_AHEAD_GAP) {
+	    /* Wait for more data or EOF condition */
+	    if (httpState->flags.keepalive_broken) {
+		commSetTimeout(fd, 10, NULL, NULL);
+	    } else {
+		commSetTimeout(fd, Config.Timeout.read, NULL, NULL);
+	    }
+	    commSetSelect(fd, COMM_SELECT_READ, httpReadReply, httpState, 0);
+	    commSetDefer(fd, NULL, NULL);
+	    return;
+	}
+    }
     errno = 0;
     read_sz = SQUID_TCP_SO_RCVBUF;
 #if DELAY_POOLS