You're probably right, it was actually Micron's claim that we used (end of first paragraph: http://www.micron.com/products/solid-state-storage/enterpris...).

They're still ridiculously fast. Once we can justify the expense, I would love to get Fusion-IO's or the Micron P320h's on our platform.

Regarding Ubuntu, we're just using the vanilla Ubuntu 12.04 server distribution for our image templates. Of course, if people wanted OpenStack we would support it and possibly create another template for easy provisioning.