Board Thread:General Discussion/@comment-24661007-20140612000528/@comment-452-20140612002342

Since there are more ads when logged out, that would tend to indicate that perhaps a bad ad is to blame.

Upgrading flash may also help. Blocking flash may also help. In Chrome and Firefox, you can change an option to that placeholders are shown instead, and flash isn't loaded until you click on them, you should look into whether that's also possible in IE.