I'm running a 15 day evaluation of the zonealarm security suite. It has the best ad blocking I've seen yet but seems to interfere with viewing thumbnails of photos attached to posts.

Using either Firefox or IE I can see the attached thumbnails box at the bottom of the posts, but with no contents. If I pass my cursor through that box slowly I can see the cursor change to a hand when it passes over an invisible thumbnail, and when I click it'll display. Changing the forum's display style doesn't seem to make any difference either.

I'm guessing this is related to the settings zonealarm is using for ad blocking/cookies/web bugs/private headers etc on this site, but can't find a setting that'll show those thumbnails.

Has anyone else had this problem and cured it?