Hi Tarja,
Could I get a list of the files in the cgi-bin forlder that are suppose to be there and if there are any files the software is creating afterwards.
ListMail files in your cgi-bin folder might include the following:
bounce.cgi
signup-listX.cgi (with X being the list being subscribed to)
That's it. Other files could be part of other scripts, however... so I don't know what deleting them will do.
I highly recommend bringing your concerns to the attention of your host so they can investigate.
Regards