While looking at some infomation from a vendor who sells Linux "optimized" hardware (laptops and such) their web site states the following about RedHat 6.2:

... " modifies RedHat in many specific ways to provide the best possible portable Linux distribution. These include a customized kernel (half the size of distribution kernels) " ...

So my questions are these:

1. How can the kernel be cut in half?
2. What would be removed, or diminished, to achieve half-size kernels?
3. If this is possible, why doesn't RedHat do it?

...just curious!