My suggestion would be a simple and intuitive way to change the settings to be identical to the default settings on IE. I've been trying to convert my fiance to firefox, and she gets frustrated with any difference between the two because she's used IE for a while. I don't necessarily think that all of the defaults should be the same automatically, but some simple method that novice users could use to make the functions (such as prompting when saving information) the same as they are typically in IE would probably help Firefox be more used by novices, who I'd think were a lot of the market.
My suggestion would be a simple and intuitive way to change the settings to be identical to the default settings on IE. I've been trying to convert my fiance to firefox, and she gets frustrated with any difference between the two because she's used IE for a while. I don't necessarily think that all of the defaults should be the same automatically, but some simple method that novice users could use to make the functions (such as prompting when saving information) the same as they are typically in IE would probably help Firefox be more used by novices, who I'd think were a lot of the market.