I periodically run revdep-rebuild to check system consistency. Each time, adobe-flash gets rebuild. As adobe-flash is a binary package, rebuild does nothing. Second run straight after first one repeats the process. ldd /usr/lib32/nsbrowser/plugins/libflashplayer.so tells me that libraries missing are: libXt.so.6 => not found libnss3.so => not found libsmime3.so => not found libssl3.so => not found libnspr4.so => not found libgtk-x11-2.0.so.0 => not found libgdk-x11-2.0.so.0 => not found libgdk_pixbuf-2.0.so.0 => not found libpango-1.0.so.0 => not found libfontconfig.so.1 => not found libgobject-2.0.so.0 => not found libglib-2.0.so.0 => not found libfreetype.so.6 => not found 64 bit flash player has all dependencies. I suspect the problem is in ebuild. Also in revdep-rebuild not checking that it fixed the packages it rebuild.
If you have the 32-bit plugin installed, you should also have the 32-bit libs it requires to function. The dependency atoms in RDEPEND are missing [${MULTILIB_USEDEP}], so portage does not enforce the proper dependency.
Fixed in 25.0.0.171.
