I recently installed Kerio's personal firewall. On opening Opera 8's web cache folder in Windows Explorer, Kerio started popping up multiple messages that Windows Explorer wanted to connect to the net. I kept pressing "Deny" to stop it. Moving to a new folder paused the messages, but then they returned. In the end I had to close Explorer down.
On reopening it and navigating to the same folder, again Kerio reported multiple net attempts. I noted some of these contained the names of advertising sites and IP addresses, including this site:
A Google search told me many users have had problems with this site repeatedly hitting them. (In fact there's a Webmaster World thread about it here [webmasterworld.com].)
But why would a site be using Windows Explorer when viewing the folder? Do I have a virus on my PC? Ad-Aware reports nothing. (I have now banned Explorer from accessing the net altogether.)
I've noticed before that when an HTML page is in a folder, Windows tries to connect to the net. Something secretive by Microsoft going on perhaps? Who knows. I think this only happens when thumbnails are shown. (It then shows an image of the web page.)
I always clear the cache after surfing too.
I am on XP SP2 with all the latest patches.