I had this problem awhile back, and then it just sorta went away, but now it's come back to bother me again.
When I get new internet email in Outlook 2000, and click on reply and write the reply and send it, it doesnt mark the message as replied (with the little icon) in my inbox.
As you can imagine, it gets a little frustrating when I have to sit and think "did I reply to this already?"
ANy help would be muchly appreciated =)