I also switched from OE to Outlook XP, since I got Office XP. Just for email is one thing. But there are other features that are useful to me- mostly because it has scheduling features and is an organizer as opposed to OE which is email, mainly. As far as security is concerned, I've read alot on that so far, including MS's white paper on it. Between that and visiting their product update page every so often, I'm not too concerned.