Quoting Big Brother ignorance.is.strength@gmail.com:
It appears to be a problem with the Karma module we are using. The call in questions arise when we call a query for the Top Rated Comments, which we display to the user in a sidebar.
Oddly enough, this only happens on the weekends and then doesn't give us any problems during the week.
Has anyone ever heard of the Karma module causing a problem?
Check the issues. This one http://drupal.org/node/100266 looks interesting.
Earnie -- http://for-my-kids.com/ -- http://give-me-an-offer.com/