Has anyone tried the c++ compiler on a windows app using VS .net 2003? I 've seen a 50% DECREASE in speed going from the microsoft comiler to the intel compiler. The application is a "photoshop" like app that uses pretty standard math and trig. Nothing complicated mathmatically speaking but very data intensive, that is, lots of disk io and memory. I would have expected the intel compiler to yield much better results given that I had full speed oriented optimizations on. Baffling!