I have tried that too. I gives me an error message:
Cannot login Login incorrect.
I know the userid and password are correct....I've tested them directly. Just one doubt, the password contains some back slashes and $ sign. Can that be a problem? But, I am enclosing the password in quotes, so that should not be problem....???
My code is:

use Net::FTP;
my $ftp = Net::FTP->new("ftp.server.com", Debug => 0) or die "Cannot c
+onnect to some.host.name: $@";
my $username = 'username';
my $password = 'pa\ss\wor$d$';
$ftp->login($username,$password) or die "Cannot login ", $ftp->message
+;

$ftp->cwd("/files") or die "Cannot change working directory ", $ftp->m
+essage;

$ftp->ls("/files") or die "get failed ", $ftp->message;

$ftp->quit;
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