Hi, 1.34.0 release candidate 2 is now available from http://www.boost.org/ release/. It contains the following changes from RC1: - configure update from Doug Gregor - doc updates from John Maddock - read_write_mutex sources removed by Anthony Williams Please give it a try and report any problems to the developer list or directly to me. Unless it's broken in a major way it'll be released unchanged on Friday May 11. Thanks Thomas -- Thomas Witt witt@acm.org