On Sun, 2005-09-11 at 05:11 +0200, Michael Rudolf wrote: > Another point is shared memory; I have that enabled in the kernel, I > have a > tmpfs mounted on /dev/shm, and Jack is compiled with support ("JACK > compiled with System V SHM support."), but I have read that Jack > uses /tmp > for pipes per default, and I can in fact see some > in /tmp/jack-[uid]/default/. Now /tmp is a normal ext3 file system > here, > not a tmpfs. Could that alone be the problem? Yes, that is almost certainly the problem. The /tmp entry in /etc/fstab should look like this: tmpfs /tmp tmpfs defaults 0 0 Any decent distro should do this by default. Lee