Invisible Comments????

I was looking through the posts one day and i saw that the post “EEEK!!! The Largest Spider ever….” had twenty comments,

eeek - invisible comments????

I wanted to read them so i clicked on the link and, well, i read them, I was surprised that I had read through twenty comments so quickly so I looked back and counted them, sure enough there were only eleven as shown here, (There are absolutely no comments missing)

1 - invisible comments????

2 - invisible comments????

3 - invisible comments????

By the way I’m using Firefox 3 if that helps any.