Please stabilise dev-libs/libevent-1.4.11 .
Stable on alpha.
Stable for HPPA.
Sparc stable.
x86 stable
+ 11 Jul 2009; <chainsaw@gentoo.org> libevent-1.4.11.ebuild: + Marked stable on AMD64 for bug #275595; tested on a dual Opteron 2354.
ppc stable
arm/ia64/s390/sh stable, mips doesn't do stable keywords
Stabilisation continues in bug #281475.