Thanks to the advice earlier in this thread, my system now has no shared interrupts. :-) I have a much simpler set up than Florin's it has to be said. I haven't had a chance to push it with a complicated music session yet, apart from that it's not made an appreciable difference, but it's got to be one less thing in the way of good performance. Not having had any formal training in computers I find these discussions most valuable. Thanks tim hall
