I've been studiously avoiding doing thread programming, but I realize that it's needed for some kinds of problems. Anyway, reading the thread thread made me wonder whether Laurent's new and improved threads will be compatible with other Ruby thread implementations or whether (say) some modifications may be needed to existing code. More generally, as we learn about how MacRuby varies from other Rubies, we should document this lore in a wiki page: Better isn't always better, but better is always different. If folks want to propose content for the page, I'm willing to create and maintain it... -r -- http://www.cfcl.com/rdm Rich Morin http://www.cfcl.com/rdm/resume rdm@cfcl.com http://www.cfcl.com/rdm/weblog +1 650-873-7841 Technical editing and writing, programming, and web development