We haven't seen anything out of the ordinary. Here's the normal response we give for ssh bruit force complaints: https://trac.torproject.org/projects/tor/wiki/doc/TorAbuseTemplates#SSHBrute...
I take this back, just got one from a "Goran Matovinovic" this morning. I'm a little tempted to tell him to get a life, though we tend to ignore automated spam complaints like this.