added more protection for the file which is in plaintext by renaming it with a '.' in the beginning. Now the file remains hidden on unix systems when the application is running. ON windows anyway the average user will never find out, But will try to find something if possible. The name of the file depends on the time that is there on the system and is hashed. thus the filename is diffferent each time thus making it more difficult to penetrate the system. But still possible for the expert!