Just after rebuilding FRED (effing ridiculous electronic device) after a HD crash I got zapped by a trojan.
Trojan Horse IRC/Backdoor.SdBot.47.J
It looks like I have finally got rid of the rotten thing after a lot of work.
Now have reinstalled and updated my antivirus software, firewalls, popup killers and cookie munchers.
Once again, this has made me appreciate Apple OS X Panther!