[Plugin: Exploit Scanner] exploit scan reveals hashes-3.3.php missing

Hello,

Wondering what this means and what I can do about it. When doing the first scan on the new version of wordpress 3.3, this is the message I receive …

hashes-3.3.php missing
The file containing hashes of all WordPress core files appears to be missing; modified core files will no longer be detected and a lot more suspicious strings will be detected

http://wordpress.org/extend/plugins/exploit-scanner/