I've installed the TurnkeyLamp appliance in a virtual machine (VirtualBox) and then installed a fresh wordpress (using wget http://wordpress.org/latest.zip). This runs fine. I can log in from a windows machine using winscp (sftp client) and puTTy (console) as well as the Shell in a box, etc.
However, the wordpress autmatic update feature does not work. It gets hung up with a "Failed to connect FTP Server ..." message after asking for hostname, ftp username and ftp password. I entered the server username (root) and password but this would not run for either FTP or FTPS (the two wordpress autoupdate options).
I also tried installing the Wordpress appliance. It too ran and this did auto updates without problem. But after installing a second instance of wordpress in a subfolder from the document root the 2nd wordpress had the same problem as above. That is, it ran wordpress fine, but plugins, themes, etc could not be updated using the wordpress built-in auto update feature.
How do I configure these appliances to use the server FTP for auto updates within wordpress - FTPS obviously preferred - but this isn't a production environment. I'd settle for anything that worked.