I have installed your plugin, but I cannot seem to get it to work. I always get the private key incorrect for wordpress message.
My installation is running on an Ubuntu 12.04 server. ftp is disabled, sftp works fine.
I setup a special linux user wordpress to do the updates. Created the ssh keys. copied the pub key to authorized keys and downloaded the private key to my desktop. When I try the update process i have :
Hostname = localhost
FTP/SSH Username = wordpress
FTP/SSH Password = passphrase
I upload the key file and pick ssh2
Any help would be appreciated