Change distressing / inaccurate debug message about overwriting profiles

IPython/frontend/html/notebook/clustermanager.py

@@ -80,7 +80,7 b' class ClusterManager(LoggingConfigurable):'
             for profile in list_profiles_in(path):
                 pd = self.get_profile_dir(profile, path)
                 if profile not in self.profiles:
-                    self.log.debug("Overwriting profile %s" % profile)
+                    self.log.debug("Adding cluster profile '%s'" % profile)
                     self.profiles[profile] = {
                         'profile': profile,
                         'profile_dir': pd,