change to minrk's suggestion from mailing list

IPython/frontend/html/notebook/notebookmanager.py

@@ -152,7 +152,7 b' class NotebookManager(LoggingConfigurable):'
             except:
                 raise web.HTTPError(500, u'Unreadable JSON notebook.')
         # Always use the filename as the notebook name.
-        nb.metadata.name = u'.'.join(os.path.split(path)[-1].split(u'.')[:-1])
+        nb.metadata.name = os.path.splitext(os.path.basename(path))[0]
         return last_modified, nb
 
     def save_new_notebook(self, data, name=None, format=u'json'):