This applies to just one user. In the inbox, some, but not all messages received with attachments will show up with a paper clip signifying an attachment, however there is no attachment in the message. The attachments are excel files, however not all excel attachments are having this problem.
When the message that is missing the attachment is forwarded from this user to another Outlook 2003 user, the attachment is present and can be opened.
Is this a security setting of some sort or what direction should I take in troubleshooting?