Steps to reproduce:
1.Configure an external repository (alfresco, nuxeo, sharepoint, ...)
2.Go to D&M, click Home
3.Do a search for a non-existent file
The portal will say no results were found and will show a row of tabs with the Local and configured external repository.
4. Click on the external repository tab
Expected result: a search is performed in the external repository
Failure result: an animated progress GIF is shown but no request is sent to the portal so the application seems to lock forever.