I'm using the last putty version and can't create two different sessions (Needed when I need to do SSH TUNNELING and log the server for maintanance)
Here is the log from the second connection that got failed:
Looking up host "[IP]" Connecting to [IP] port 22 We claim version: SSH-2.0-PuTTY_Snapshot_2011_04_14:r9149 Server version: SSH-2.0-OpenSSH_5.8p1-hpn13v11 Using SSH protocol version 2 Server supports delayed compression; will try this later Doing Diffie-Hellman group exchange Doing Diffie-Hellman key exchange with hash SHA-256
Then it hangs. It happens only with putty. I can log on with OpenSSH client (through linux) with any number of sessions that I want.