In D6 and D7 sites where I use mollom I get sometimes a "page not found" error in the logging on:
mollom.com/web-service-privacy-policy.
I looked in the mollom.module of the D7 version and found the source of the error in function mollom_form_alter() this line:
'@privacy-policy-url' => '//mollom.com/web-service-privacy-policy',
which should read:
'@privacy-policy-url' => 'http://mollom.com/web-service-privacy-policy',

Comments

Category:bug» support
Status:Active» Postponed (maintainer needs more info)

The Mollom module intentionally uses protocol-free URIs to link to mollom.com resources, so as to automatically use the HTTPS protocol when the page is delivered on HTTPS/SSL.

This technique is well-known and supported by all browsers.

Is it possible that you have some JavaScript on your site that replaces all links or similar?

The relevant code is this:
http://drupalcode.org/project/mollom.git/blob/HEAD:/mollom.module#l738

Status:Postponed (maintainer needs more info)» Closed (duplicate)

Sorry for the late reply — this issue has been fixed as part of the second last stable release or so.

If you haven't already, make sure to update to the latest stable release. :)