I have a page with a summary link web part. When I try to edit it, all the links disappeared. I notice that my title for the summary link changes from 'directory listing' to 'untitled'. when I go to 'modify shared webpart', my content (all links and columns) are gone. Has anyone had this problem? I've used this summary link webpart before and have had no problems. I've recreated this thing 6 times already and the same thing keeps happening. . .