My crankset is the Shimano FC-M440 (engraved right on the crank arm) and everything I have found tells me that this is a square tapered crankset.
But when I take the crank bolt out it looks nothing like a Sq-Tapered deal, in fact it looks almost exactly like this splined Octalink pic I found at the Park Tool site:
http://www.parktool.com/images_inc/r...help/bb228.jpg

So is it possible that the engraving is wrong or am I missing something?