Well it is being alerted here:
http://urlquery.net/report.php?id=3143426IDS comes in the RBN ruleset and as a webclient rule
Also Bad customer experience reported on WOT
This for the main site I get no avast alerts in Google Chrome,
and I get this
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html><head> <title>404 Not Found</title> </head><body> <h1>Not Found</h1> <p>The requested URL /javascriptslideshow/js/undefined was not found on this server.</p> </body></html>
This javascriptslideshow/js/ can come spyware infected or with a keygenerator, also can come via WP infection via default-filters.php, etc
Also protect against dovecot vulnerabilities....f you don't use imap or pop3, then remove dovecot...
polonus