pkgng on PC-BSD rolling release is not stable.

The package management tool of PC-BSD rolling release is pkg(8)(a.k.a. pkgng). But, IMHO, this is not stable yet.

• XScreensaver for pkgng is 5.12, but default version of PC-BSD rolling release is 5.20. When executing pkg upgrade, Xscreensaver and its releated GUI libraries are degraded.
• As written in this manual, when accepting to use pkgng, it is NOT reversible to any existing package management tools.

So I decide not to use pkgng for a while, until FreeBSD/PC-BSD 10.0 will be released.

(/etc/make.conf)

WITHOUT_PKGNG=yes