ftpget or netscape bug?

From Netscape, I did an ftp to a machine specifying a username such as:

ftp://tim@hostname

This worked fine, as it would normally, asking for a password before
letting me in. The problem is that now, when I go somewhere else,

ftp://archie.au (for example)

It tries to login to this host using 'tim' as the username. Squid
returns an expected error message like:

--
"While trying to retrieve the URL: ftp://tim@archie.au/ 
The following FTP error was encountered: 
     User tim access denied.... 
This means that: 
    An FTP protocol error occurred.  Please try again."
--
Is this a 'feature' of Netscape or ftpget which is causing the
memory-effect???  How do I get around this?!?!
I'm running Squid 1.1.6 under Linux 2.0.29.
-- 
Tim Carlier                            Tim.Carlier@OZsupermalls.com.au
Internet Supervisor                             Phone : +61 9 322 6230
PCU Computer Systems Australia                    Fax : +61 9 322 4471