I installed the "beta 2" build on my 8330, and I am also having issues connecting to a Cisco device. Here is what the Cisco's log is telling me:
Oct 30 21:43:21 UTC: SSH2 0: hostkey algo not supported: client ssh-dss, server ssh-rsa
I was reading somewhere that this issue may have something to do with needing to use an RSA key instead of a DSA key... I haven't found a way to make it connect yet.
On a side note, I'd love to be able to import a private key from putty or something. Most of our SSH2-enabled devices require me to use my private key. This one happens to not require a key, but it doesn't like the client. Just my luck.