Chris Baird writes:

>Something I always do when building Mozilla from pkgsrc is go through
>the build by hand, and munging MOZ_OPTIMIZE_FLAGS to "-O2" in several
>configure scripts (over the default "-O"). It makes a world of
>difference...

It does?  Something measurable or only your personal "experience"?
Given the notorious incorrectness of gcc compilers it's probably also
contributing to mozilla crashing a lot faster, though...

--mkb