not just threading... HYPER-threading!

[rone]

Hyper-Threading, as currently implemented on Intel Pentium Extreme Edition, Pentium 4, Mobile Pentium 4, and Xeon processors, suffers from a serious security flaw. This flaw permits local information disclosure, including allowing an unprivileged user to steal an RSA private key being used on the same machine.

It goes on to claim that "This issue affects FreeBSD/i386 and FreeBSD/amd64," but if it only affects Intel CPUs, why would it affect FreeBSD/amd64?