When a user sends emails every once in a while random contacts get added to his email.
For example he has 2 contacts chosen for email conversation that spanned over 5 exchanges. He was sending and replying fine until one day he noticed 2 additional contacts just randomly showed up in the 'CC' section in the email he sent. This has been happening very randomly. He did not add them. They were not there when he hit the send button. They would reply asking why they were CCed and when checking his sent box he noticed they were there.
He is using Outlook 2007 on a Windows XP machine. We use Symantec EPM and ran a full virus scan and everything seemed clean. All of the updates are up to date.
Thanks in advance for any help,