> Some of us have been writing C in Linux for ~12 years and decided enough is enough. C++ is not any better (in many ways worse), ...

And that's where you went wrong. Good, modern C++ is much better than C for most high level applications. Most of the anti C++ attacks from below (C) and above (Java/C#) are merely FUD in my experience. Programming in C++ provides nice abstractions that C lacks, without giving up system-level control that the JVM/CLR environments do.

Now when will we see the Firefox Javascript JIT compiler ported to AMD64? It's not very well documented but 64-bit Firefox builds simply ignore the javascript.options.jit.content setting. It took me a while to figure out why the much promoted feature had no affect on any Javascript benchmarks.

Unfortunately tracemonky still doesn't work on 64-bit builds. You can set the javascript.options.jit.content preference to true with no warning that you are at most going to get a placebo effect on javascript performance. So anyone with a modern system won't be able to take advantage of one of the biggest new features.