* @return instance.
*/
public static synchronized Connector getInstance() {
String osArch = System.getProperty("os.arch");
if (osArch.contains("64")) {
throw new UnsupportedArchitectureException(
"Skype Java Api doesn't support running under 64bit architectures under Mac OSX. " +
"You may try running with 'java -d32' if your system has java 32bit installed."
);
}
if(_instance == null) {