Please disregard (for now). I've written a small python->asio with timer that DOES work. I need to further narrow the problem. -----Original Message----- From: Eric Newhuis Sent: Friday, March 28, 2008 10:56 AM To: 'Boost-users@lists.boost.org' Subject: Asio deadline_timer does not work when io_service::run is called from a Python thread. Dr. Egon Spengler: There's something very important I forgot to tell you. Dr. Peter Venkman: What? Dr. Egon Spengler: Don't cross the streams. Apparently my deadline_timers don't work when I call io_service::run from python on Linux. Has anyone encountered this and worked around the problem?