A simple test script shows that that's not the case. 

use strict;
use Digest::MD5 qw( md5_hex );

my $string1="CA" . "Los Angeles" . "1440x900" . "en-us" . "Mozilla/4.0
+ (compatible; MSIE 6.0; Windows NT 5.1; SV1)" . "";

my $string2="CA" . "Los Angeles" . "1280x1024" . "en-us" . "Mozilla/4.
+0 (compatible; MSIE 7.0; Windows NT 6.0; SLCC1; .NET CLR 2.0.50727; M
+edia Center PC 5.0; .NET CLR 3.0.04506)" . "";

print md5_hex( $string1 ), "\n", md5_hex( $string2 ), "\n";
exit 0;
__END__
256645dc3bb33cfd395c51faf4241cfc
c3fbc65ae0b12ee4cd22ccadd3d9a3f7

[download]

Something Else Is Wrong™, but then you haven't shown any actual code so it's all pretty much going to be conjecture.

The cake is a lie.
The cake is a lie.
The cake is a lie.

In reply to Re: md5_hex diff input produces same output? by Fletch
in thread md5_hex diff input produces same output? by Oaty

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