The SidKi version causes this page
http://www.discovery.com/stories/science/iss/iss.html
to completely fail to load...
testing shows this line
# GENERIC AD COMMENTS FOR ANY DOMAIN
ad(s|)[^a-z] * end (ad(s|)[^a-z])1 *-->
in the generic comment catcher part in AdCommentPairs.txt to be too generic...
It encounters a script in the headsection, in which the code starts with <!--, however, there's no matching closing comment but because of the [^>]++{0,30} in the match, it starts scanning the first 30 characters and mistakenly considers
<!--
//pre-load images
to be an ad tag because of the 'ad' in 'pre-load' . As bad luck will have it, there's a comment tag halfway down the htmlcode matching the closing tag
<!-- end ad tiles _ nav bar -->
and consequently a chunk of html starting in the head section and ending in the body section, is removed, making the page no longer renderable
FWIW, I've included an s infront of the line in question, it fixed this instance but causes <!--ad to nolonger match...