Asus Crosshair nforce 590 SLI; how is general use and Linux support?

It’s system upgrading time again and having been stuck between Socket 775 and Socket AM2, I think I’ve decided on AMD again but what now of the motherboard?

1. Is anyone out there running an Asus Crosshair nForce 590 SLI? Reviews all look good but how does an actual owner find the mobo?

2. How is the Linux support for it? Any grief from chipset, audio or networking?