Sudoers

["Antispammbox-debian" <antispammbox-debian@yahoo.it>]

Hi 

I use some utility like TrueCrypt and gmountiso that using sudo.

I've added myself to the group sudo:
sudo adduser myself
and modified with nano visudo, the sudoers file.

username ALL=(ALL)  NOPASSWD:    ALL

but programm that use sudo, continuing request password.

It possible to change this?

Thanks

Regards