Duplicate pages with same name

Someone here managed to cause the creation of two pages with the same name in one space. Both pages are shown in all listings for pages (as a child of the space home and as created by the

macro which incidentally lists these pages with the "create new page" action).

When trying to operate either one, the web interface claims the page does not exist and the following is printed to catalina.out:

com.atlassian.confluence.core.persistence.hibernate.HibernateObjectDao findSingleObject
SEVERE: Uh oh - found more than one object when single object requested: [com.atlassian.confluence.pages.Page@fd49f9[title=blah blah, full content of the page is printed here....

Unfortunately I don't have the exact steps on how to reproduce the problem. I'd love to be able to get rid of the pages though...