Subject Line And Content Different.

I recently exported all my mail from Windows mail, re-installed Windows, then imported my mail back in again, along with my account info and contacts. Everything has seemed fine, however approximately one in every 20-50 emails has a strange problem. The subject line will show a subject and sender, however the content pane will show a comletely different email, an email from a different sender and on a diferent date.

1. I might receive an email with a certain sender and subject on the 2nd of Oct 2009.
2. Click on the subject and see different email content from a different sender in the content pane.
3. Check the email headers with the subject selected (Ctrl+F3) and see the headers show it is from the person in the content pane and was sent on the 1st of Oct 2009.