http://cvs.php.net/viewvc.cgi/php-src/sapi/cgi/fastcgi.c?r1=1.44&r2=1.45&view=patch
--- old/sapi/cgi/fastcgi.c	2008/02/15 14:51:52	1.44
+++ new/sapi/cgi/fastcgi.c	2008/04/03 10:25:08	1.45
@@ -593,6 +593,9 @@
 	hdr->reserved = 0;
 	hdr->type = type;
 	hdr->version = FCGI_VERSION_1;
+	if (pad) {
+		memset(((unsigned char*)hdr) + sizeof(fcgi_header) + len, 0, pad);
+	}
 	return pad;
 }
 
@@ -777,7 +780,7 @@
 {
 	int ret, n, rest;
 	fcgi_header hdr;
-	unsigned char buf[8];
+	unsigned char buf[255];
 
 	n = 0;
 	rest = len;