Thanks to everyone for testing and reporting back the problems with the RC. I have pinged Vicente about the Boost.Thread problem, and Sebastian about the Boost.PropertyTree warning supression patches. Antony is looking into the Boost.LexicalCast issue. After surveying the other release managers, none of these issues is worth holding up the release for (which would probably stretch to after the new year). We're going to "go with what we have" for the 1.60.0 release, and get these problems fixed for 1.61.0 -- Marshall