How about not running IE at all? Mozilla anyone?
The trouble with Mozilla, FireFox, etc., it that they are not fully compatible with all Web capabilities.
Most 3rd party browsers face that problem. For example, some pop-up chat and Internet radio windows do not open for Mozilla. Mozilla does have a problem reading some java-based browser features.
If you don't need the extra stuff, they are find. Otherwise, you have to use IE.