They had a class called "personal typing" in high school, which I took, but I didn't really get good at typing until I started programming.
It's not the ctrl, shift, capslock, or tab key. Must be a combination. And yes, Dennis, I'm on FF3 on XP as well (without some of the add-ons you've got), but when I click the forward button to get back to my page, the contents of my post aren't still there in this case. Usually I get everything back, but not with this.