This caught my eye in the news this morning and I didn't see anyone else who posted about it. So i thought i would mention it to those who haven't heard about it yet

Red Hat developer Ingo Molnar submitted a patch to Linus Torvalds on June 2 that makes available the NX (no execute) technology for x86 systems. NX was developed by Advanced Micro Devices (AMD) for its AMD64 hardware. Intel, Transmeta Corp. and VIA Technologies Inc. also announced support for NX, which adds a no-execute bit to a CPU's memory area.

I'm curious if anyone else has further information on this. I've googled it and have only found descriptions of what they are going to do. What is this going to break in *nix and/or windows because of this addition?