I have some reason to believe that my RT interrupt handler is being interrupted by something else. Is this possible? I have nothing else installed, except that interrupt handler, but I am frequently unloading and re-installing the handler via the request_RTirq() free_RTirq() functions. FWIW, I am running release9H. - peter --- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] ---- For more information on Real-Time Linux see: http://www.rtlinux.org/~rtlinux/