>>>>> "J" == Joseph McDonald <joe / vpop.net> writes: J> Interesting. So are you saying that if an interrupt occurs, ensure J> blocks are not *supposed* to be executed when rb_sys_fail() is called? No, I'm trying to say (with diplomacy :-)) that there is a problem in sysvipc.c The call must be protected against control-c, and perhaps try to be thread-safe Guy Decoux