I'm seeing lots of messages that quote entire threads before adding a paragraph (or sometimes just a sentence) out-of-line. Please try to keep the list and its archives readable by pruning the quoted text before posting (http://www.boost.org/community/policy.html#quoting)! Thanks -- Dave Abrahams Meet me at BoostCon: http://www.boostcon.com Boost Moderator http://www.boost.org