Peter McCaul wrote:

Server: Windows 2003, Exchange Server 2003
Workstation: Windows XP, Outlook 2003

I have a user that when downloading his e-mails in the morning, half
to three quarters of his e-mails are read (not bolded). He picks up
his e-mails (from Exchange) like all other 35 users and he's the only
one that's having this problem.

Look for add-ins like a SPAM or antivirus scanner or the Reading Pane
settings.
--
Brian Tillman