Tracker for packages failing to build with Boost 1.50.
Many of the bugs which were added appear to be not boost-1.50 related, but slotting related.
Before you add a new bug as blocker to this bug, I suggest that you uninstall <boost-1.50 and see if the problem persists.
Why does Boost-1.50 block glibc-2.16 ? Both packages work fine here btw.
The only one package not compiling with >=dev-libs/boost-1.50 is media-gfx/k3d which is PMASKED. I think this can be closed as fixed.