I've just switched on "out-of-order" packages, after much testing.
What this means: new packages won't be compatible with older pkg_add. Most specifically, the plist order may no longer match the packing-list. -> if you see strange pkg_add errors, and your base system is not uptodate, that's your fault. New bulks will exploit that feature: build machines log an history of files in a package. With out-of-order archives, they can take advantage of that to produce packages where the most recently changed files are at the front. For some packages, this can be a drastic performance improvement: some measurements show that as much as half of some packages do not change over a 2 months period. Note that this will speed up "dependency, maintainer and other meta info" updates even more, as the package extraction may stop right after the meta information...
