I've just had some searches come to my site via the following google search strings:
intext: \/wordpress \/ 220.127.116.11
inurl:"wordpress" intext:"powered by wordpress 18.104.22.168"
Does this mean that someone might be looking for sites to hack? I've gone and upgraded to 22.214.171.124 by replacing the wordpress/wp-includes/template-functions-category.php as was suggested in some other posts.
But I'm still a little worried - am I being too paranoid here?