Look up IEFIX and note what it does.
Next consider any EMAIL plugin (norton, avg, other) and test drive without it.
Bob
I an running Outlook 2003 on an XP machine. Messages containing hypelinks to web sites are freezing Outlook when they are clicked. E-mail address links work fine.
Ideas?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic