--- mysql-5.1.43/sql/log.cc~	2010-01-15 19:17:28.000000000 +0200
+++ mysql-5.1.43/sql/log.cc	2010-02-01 14:53:55.026725423 +0200
@@ -5020,11 +5042,11 @@
   bool result=0;
   if (opt_error_log)
   {
+    VOID(pthread_mutex_lock(&LOCK_error_log));
+#ifdef __WIN__
     char err_renamed[FN_REFLEN], *end;
     end= strmake(err_renamed,log_error_file,FN_REFLEN-5);
     strmov(end, "-old");
-    VOID(pthread_mutex_lock(&LOCK_error_log));
-#ifdef __WIN__
     char err_temp[FN_REFLEN+5];
     /*
      On Windows is necessary a temporary file for to rename
@@ -5060,7 +5082,6 @@
     else
      result= 1;
 #else
-   my_rename(log_error_file,err_renamed,MYF(0));
    if (freopen(log_error_file,"a+",stdout))
    {
      FILE *reopen;