If you connect via SSH to Socrates or to certain other campus hosts which have upgraded to newer SSH server software, you might need to upgrade your copy of F-Secure SSH to version 1.0.2 or 2.0.
More details appear below.
Version 1.0.2 of F-Secure SSH for the Macintosh is a minor upgrade to previous 1.0.x products, which are all SSH1 clients. Version 2.0 of this product is a completely-rewritten SSH2 client. Its human interface is very different from the 1.0.x releases. Some reconfiguration and relearning will be required. A newer version, 2.1, has subsequently been released.