The list of students in the forum statistics has a set of links that take the user to a detailed summary (msgs authored and read) per person. This link is constructed via an onclick in JSF fashion. One of the parameters of the onclick is the unescaped name of the student, however. If the student has a name with an apostrophe (or maybe other characters as well) the link will fail, and in some browsers further clicks will be disabled in this page.
Ying - assigning to you by default - not sure who would actually take care of this, but you would know.