...Gentoo? One of the reasons why I have switched from Gentoo to Debian were stable, more rounded-up releases, with more bugs fixed and issues straightened out between them. Constant upgrading means constant stress over what could have possibly break. I believe people can handle a few broken things on Ubuntu desktop at home, but for Ubuntu servers and for Ubuntu desktops in the enterprise, this is a disaster waiting to happen.

And what is the reason for doing two hash operations that take double the time when you already have better, stronger hash functions?