Rootkit hunter warnings

I've had my Mac 21.5" for a month now.

Decided to run rootkit hunter as I had it on my Linux box, it's the only security program i run

Got the following warnings, can anyone tell me whether or not I should worry about them?

The Apache ones are strange, I do have Xampp but the server wasn't running when I did the scan.

Checking if syslog remote logging is allowed [ Warning ]
Syslog configuration file allows remote logging: install.* @127.0.0.1:32376

Performing filesystem checks
Checking /dev for suspicious file types [ Warning ]
Suspicious file types found in /dev:
/dev/fd/7: data
Checking for hidden files and directories [ Warning ]
Hidden file found: /usr/share/man/man5/.rhosts.5.gz: gzip compressed data, from Unix

Checking application versions...

Checking version of Apache [ Warning ]
Application 'httpd', version '2.2.15', is out of date, and possibly a security risk.
Checking version of Bind DNS [ OK ]
Checking version of OpenSSL [ Warning ]
Application 'openssl', version '0.9.8l', is out of date, and possibly a security risk.
Checking version of PHP [ OK ]
Checking version of Procmail MTA [ OK ]
Checking version of OpenSSH [ Warning ]
Application 'sshd', version '5.2p1', is out of date, and possibly a security risk.

<bump> Anyone?