I received the following from my server company...
We can show you the following error being dispĺayed a lot of times in your php logs:
PHP Warning: Missing argument 2 for wpdb::prepare(), called in /var/www/writerscarnival.ca/wp-content/plugins/category-icons/category_icons.php on line 1221 and defined in /var/www/writerscarnival.ca/wp-includes/wp-db.php on line 992
Looks like this error is coming from category-icons plugin. You may want to take a look and fix this error, since it could be the culprit for the problem you are experiencing.
Is anyone else having this problem? How can I fix it?