In the build settings panel of VS2010 Pro, there is a CheckBox with the label \"optimize code\"... of course, I want to check it... but being unusually cautious, I asked my
The optimizations shouldn't really break your code. There's a post here by Eric Lippert which explains what happens when you turn that flag on. The performance gain will vary from application to application, so you'll need to test it with your project to see if there are any noticeable differences (in terms of performance).