icedtea-6-jre-jamvm 6b18-1.8.8~pre1-0ubuntu1 (armel binary) in ubuntu natty

 The package provides an alternative runtime using the JamVM. This is a
 somewhat faster alternative than the Zero port on architectures like armel,
 mips, mipsel, powerpc.
 .
 The VM is started with the option `-jamvm'. See the README.Debian for details.