Apache errors and fail2ban

Hi,

I got my first Linode about a month ago, and everything is great, but I have a question:

I'm running Ubuntu 10.04, and in the apache log /var/log/apache2/error.log.1 are many "File does not exist" statements, most of them are for PHPMyAdmin or some CMS, none of which I have.

Should I be blocking these or what?

I tried putting the code below into my Fail2ban jail.conf, but in the fail2ban log it shows its an invalid command:

failregex = [[]client (?P<host>\S*)[]] File does not exist: .*\.php</host> 

but I wasnt sure where to put it so I put it here

[apache-noscript]

enabled = true
port    = http,https
filter  = apache-noscript
logpath = /var/log/apache*/*error.log
failregex = [[]client (?P<host>\S*)[]] File does not exist: .*\.php
maxretry = 6</host> 

I'm sure I'm not the only one getting these errors, but I couldn't find a thread about what any body else is doing with these errors.