Lfd: System Exploit Checking Detected A Possible Compromise

I always recieve this email: from lfd

Time: Tue Apr 29 03:40:13 2008

Possible detection of "Random JS Toolkit"
Failed to create test directory /etc/csf/1: No space left on device:

See [url] for more information

I do this to test if my server is infected:

mkdir /home/1

it created without any problems

and I used tcpdump and I got this:

<script type="text/javascript" src='jscripts/ips_ipsclass.js'></script>
<script type="text/javascript" src='jscripts/ipb_global.js'></script>
<script type="text/javascript" src='cache/lang_cache/en/lang_javascript.js'></script>
<script type="text/javascript" src='jscripts/ips_xmlhttprequest.js'></script>
<script type="text/javascript" src='jscripts/ipb_global_xmlenhanced.js'></script>

is that mean the server is infected? but these scripts are for the IPB forum board so why I still recieve this email?