Hi, Using Arch Linux, I just upgraded my system to kernel 2.6.35.2, with no observable problems so far. In particular, my doubletalk lt continues to work fine on serial port ttyS0. Chuck -- The Moon is Waxing Gibbous (72% of Full) My audio web site: www.edway.ftml.net My audio editor weblog: edway.wordpress.com -------- Linux: The operating system with a CLUE, a Command Line User Environment