Hi Carlos,
1) - the screenshots you showed are not from a custom-dashboard - as far as I can see, These look like a List-viewer portlet you use on an UMP-page. correct?
2) - what I see these are lists, that are created and managed in the list-designer. Open de list-designer and open de specific list-file and see how it is build per collumn. That may give you a start to troubleshoot...
hope this was usefull