Blank Emails, Microsoft Office 2003

Hey folks.
I'm stumped after working on something for a couple days already.
I've got a colleague (WinXP Pro) who has Outlook 2003.
Within the last week about half of her emails have been coming in with no body to them. They seem blank.

I have been able to contact some of the senders and asked them if they have been writing in messages along with the rest of the email (eg. an attachment) and they have said yes. Anyone can view the attachments they send, if they do, and the headers of them emails are intact.

This MAY have coincided with one other thing... a day or 2 before anyone started noticing this, a message popped up on the screen asking for the Office 2000 disk (which was installed on the laptop before 2003 was) so it could install some feature (feature unknown) that wasn't on the laptop already.

I let it install the feature anyway, as it wouldn't let my colleague use her email and she was able to at least use Outlook after that.

Any idea why I can't view the bodies of the emails all the sudden?