Comment 1 for bug 334768

my wireless was absent for sometime ,after a su comment which i copied from this site and pasted for action , my wireless came back assigning user as administrator, my name is absent in the sudoers list. as result i cannot take updates or any system modifications.several system folders remain hidden, including cd rom. iam coming through a neighbour wireless link as iam being unauthorised by this root user 'selfstyled administrator'. need help
grashain