--- nss-3.11.7/nss-3.11.5/mozilla/security/nss/lib/freebl/unix_rand.c.bak	2007-08-09 20:14:16.606845012 +0300
+++ nss-3.11.7/nss-3.11.5/mozilla/security/nss/lib/freebl/unix_rand.c	2007-08-11 23:29:31.651983073 +0300
@@ -1132,26 +1132,18 @@ size_t RNG_SystemRNG(void *dest, size_t 
 {
     FILE *file;
     size_t bytes;
-    size_t fileBytes = 0;
-    unsigned char *buffer = dest;
 
     file = fopen("/dev/urandom", "r");
     if (file == NULL) {
 	PORT_SetError(PR_NOT_IMPLEMENTED_ERROR);
-	return fileBytes;
-    }
-    while (maxLen > fileBytes) {
-	bytes = maxLen - fileBytes;
-	bytes = fread(buffer, 1, bytes, file);
-	if (bytes == 0) 
-	    break;
-	fileBytes += bytes;
-	buffer += bytes;
+	return 0;
     }
+    setbuf(file, NULL);
+    bytes = fread(dest, 1, maxLen, file);
     fclose(file);
-    if (fileBytes != maxLen) {
+    if (bytes != maxLen) {
 	PORT_SetError(SEC_ERROR_NEED_RANDOM);  /* system RNG failed */
-	fileBytes = 0;
+	return 0;
     }
-    return fileBytes;
+    return bytes;
 }