During the upgrade to Moodle 1.9 we will separate question categories into different contexts. Some question categories and questions on your site will have to have their sharing status changed. This is necessary in the rare case that one or more \'random\' questions in a quiz are set up to select from a mixture of shared and unshared categories (as is the case on this site). This happens when a \'random\' question is set to select from subcategories and one or more subcategories have a different sharing status to the parent category in which the random question is created.
The following question categories, from which \'random\' questions in parent categories select questions from, will have their sharing status changed to the same sharing status as the category with the \'random\' question in on upgrading to Moodle 1.9. The following categories will have their sharing status changed. Questions which are affected will continue to work in all existing quizzes until you remove them from these quizzes.