The Blackdown-Projekt released a first version of their Java 1.4.2 Linux port, wich supports AMD64 CPUs, too (besides the usual x86 CPUs). The new blackdown package is based on Sun’s Java version 1.4.2_03 (that’s the new one with updated root certificates from VeriSign).
The changes are listed on Blackdown’s Status Page. The awesome part: Graphic operations are up to 80% faster! (Sweet! ;D) Also you can check out the requirements for using that java port on AMD64 systems on that status page.
Src: http://www.heise.de/newsticker/data/kav-22.12.03-000/ (german)
Crappy biased translation by me 
