With firebug active I get the error message
piwikMenu is not defined Line 539
when clicking on the link "View detailed visitor log" of the Visitor Real Time widget. This happens when the dashboard widget is embedded into a web page. The "Loading Data" appears, but needless to say nothing else happens because the script was interrupted. I am working with version 1.8.2
Thanks for the report
For embedded widgets the urlparam disableLink=1 needs to be appended in order to hide such links. The embedded dashboard doesn't pass the parameter to the widgets atm. I'll fix that.