I think that I have been hijacked... I am using Mozilla Thunderbird for e-mail (v 1.0). Recently I have noticed some returned e-mail errors when I retrieve my e-mail. The server is usually listed as "mailer.daemon.net" and the subject is usually an offer for porn site(s). My e-mail address is listed as the sender. I AM NOT sending out these e-mails and they appear to be going to valid e-mail addresses (I have not checked the addresses). I wonder if 1) these are a form of "bounce messages" trying to infect my computer with a virus, or 2) somehow my e-mail address has been "hijacked" and is being used by a 3rd party to send out offensive e-mails/spam to other users in my name?!? I am using a satellite internet service which is always "on" (these e-mails are sent while I am not active on my computer). I have both hardware and software firewalls, hardware and software antivirus protection. I use ad-aware and spybot regularly. ANY SUGGESTIONS ON HOW TO ELIMINATE THIS??? If you require further info, please ask for it. Thank you all!