Reopened Issue: Error: Message type 52 is not valid [652]

I run a bunch of threads (max 30) which all create a client and connect to the same server, and run a few commands.
All the clients use the same ConnectionInfo object to connect.
 
The following exception occurs either on Connect, or RunCommand, but mostly on Connect.
Renci.SshClient.Common.SshException: Message type 52 is not valid.
at Renci.SshClient.Session.WaitHandle(WaitHandle waitHandle)
at Renci.SshClient.PasswordConnectionInfo.OnAuthenticate()
at Renci.SshClient.ConnectionInfo.Authenticate(Session session)
at Renci.SshClient.Session.Connect()
at Renci.SshClient.BaseClient.Connect()
at upresources.LinuxSSH.Process(Object sender, DoWorkEventArgs e)
 
I have seen this behaviour with the max number of threads set to 3, but that was in debug-mode in VS 2010.
 
Please tell me if there's additional information I can provide.