I get error messages while trying to load update information. My jAlbum installation is behind a proxy which I set in the advanced preferences (host, domain, port). The error message is: "java.io.IOException: java.net.ConnectException: Connection timed out: connect". I know that the proxy needs authentification but jAlbum doesnt ask for credentials.
Are you getting this error when you try to install a new version of jAlbum? Or when you try to install a new skin version? Does it help if, instead of responding to a prompt from within the application, you simply point your browser to the download page?