I am running Apache 2.2 on 64bit Windows Server 2008 Std edition with ActivePerl 5.8.9. My error log is filling up with blank error messages like these:

[Wed Mar 31 14:08:31 2010] [error] [client 10.6.1.164]

[Wed Mar 31 14:10:32 2010] [error] [client 10.6.1.89]

[Wed Mar 31 14:13:20 2010] [error] [client 10.6.1.131]

By looking in the access log I can tell that it occurs when our client machines issue a GET to a very simple Perl script.

#!perl.exe

use strict;
no warnings;

$|=1; 

use CGI::Carp('fatalsToBrowser');
use CGI qw(:standard);
print header;

my $CRLF = "\r\n<br>";
my $Port = '10116';     
print "Success!${CRLF}PollInterval=5${CRLF}LMProMode${CRLF}Version=7${CRLF}ConnectionPort=$Port";

exit;

The weird thing is that it does not look like this error message is inserted every time a GET to this Perl script occurs. What could cause this error message to appear in the Apache error log?