Speed. i don't think that IE will run faster than firefox on Linux. IE is integrated into OS, so it's always loaded and here is that "speed". I can say that browser is fast in KDE (Konqueror) -- Resistance is Futile
Tested both of em, they worked pretty much same. (At least in my computer) Except, IE was much faster when I was loading cnet.com (It seems like Mozilla was struggling with web-site layouts and pictures but downloading text was faster). But now, i probably get pretty much same speed since i switched to DSLextreme (6000/608) from Earthlink DSL.
Now, about another IE, I meant Another Internet Browser, my fault. -- Doh!~