I've not noticed this before but suddenly Outlook Express is grouping emails apparently by subject heading, so a group of 6 emails which I received this morning with no subject heading were "nested" as a sort of sub-directory of an email with no subject heading I received back in 2004 from a different person! Beside that persons name is a small box with a plus sign in it. Inbox had a (6) after it to show I had new emails but I had to scroll way down to find a highlighted line showing where they were under another name. I've looked in vain for an option to disable. Any suggestions?