Bug in wp-hilite

Does anyone of you encounter this?
On the main page of the blog, everything display fine. But when I click the link to the comments page, wp-hilite started to behave funny. You will not notice it till you view the source. It will start to create <span class=”hilite”></span> at the end of the paragraph, just before the
For example:

<span class=”hilite”>parents who acted in the show are their real-life parents too<span class=”hilite”></span>.

On one of my post, it is an extreme case, it pratically create <span class=”hilite”></span> tag for every space.
For example:

<span class=”hilite”></span>Went<span class=”hilite”></span> <span class=”hilite”></span>back<span class=”hilite”></span> <span class=”hilite”></span>to<span class=”hilite”></span> <span class=”hilite”></span>school<span class=”hilite”></span> <span class=”hilite”></span>yesterday<span class=”hilite”></span> <span class=”hilite”></span>from<span class=”hilite”></span> <span class=”hilite”></span>chalet<span class=”hilite”></span>