I recently deselected the "Community Ads" nodelet because it appeared to be misbehaving (their ad server, not the nodelet).

In my experience, ad servers often end up misbehaving. If the misbehavior becomes annoying, then I configure those ads away. As I recall, InternetExplorer seemed to make ad server failures more annoying than FireFox.

Before the "Community Ads" nodelet started acting up, I noticed that they had so few ads to serve that the small list of ads being shown was full of duplicates (so it seemed that they were down to perhaps an inventory of 3 total ads at that time).

If it is indeed acting up for an extended period of time, it might be time to just disable the nodelet. But if it is not doomed, then it might be best to let people decide for themselves.

In the mean time, I visited anonymously and found the Community Ads nodelet empty so I've now removed it from the default list of nodelets. Those who haven't customized their list of nodelets will no longer see it (including anonymous visitors, of course).

Does removing the nodelet eliminate the problem you reported?