The Virtualbox Ubuntu image locks out and it is not obvious or stated on download page what the password is. Searching for Password within documentation search box does not bring up the VirtualBox Page.
Additionally, the password information is embedded within a paragraph. Suggest putting user: coopr and pass: coopr as highlighted bullets on page to allow very quick retrieval. Also suggest putting all relevant password information directly on the download page to save time.
the link above has the login information, but isn't retrieved when searching for password or VM.