[LAU] jack2 + arch trouble

Hi I had some problems with my jack recently, and today something new happened, that I'm actually able to reproduce: In ardour2 "export range markers to multiple audiofiles", *but press cancel before it's finished*. I tried various settings, for instance both wav/flac and 44.100/48.000 (my jack sample rate). After this ardour still plays at more-than-normal-speed (no sound is heard), like it's still rendering, although the dialog disappears. I can force ardour stop playback py pressing the close button of the window, but it only stopps rolling, after a while a "this window might be busy and is not responding" dialog is shown, cliking "yes" (I'd like to force quit it) will exit ardour. Now to the actual strangeness: At this point jackd is screwed, I cannot start clients, it seems like jackd is not running to them. qjackctl looks ok, but if I switch to another workspace and back it's gui is all grey and I cannot exit it, except with the killall command. Top shows jackd is still running, but I can't killall it, even logging out of my xfce session and back in leaves it running. So I need to reboot to use jack again. I'm 99% sure it's not ardour, since this also happened with other clients, although not at consistent and I haven't been able to reproduce it before. Some info: atte@blokhus:~$ cat ~/.jackdrc /usr/bin/jackd -v -P85 -t2000 -dfirewire -r48000 -p256 -n2 atte@blokhus:~$ jackd --version jackdmp 1.9.8 Copyright 2001-2005 Paul Davis and others. Copyright 2004-2011 Grame. jackdmp comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details no message buffer overruns no message buffer overruns no message buffer overruns jackdmp version 1.9.8 tmpdir /dev/shm protocol 8 atte@blokhus:~$ ardour2 --version Ardour 2.8.12 (built using 10144 and GCC version 4.6.1 20110819 (prerelease)) I'm running over my edirol fa66 firewire soundcard. I'm running arch linux on a thinkpad X61s, and I'm pretty sure the system was running fine about a month ago... Any ideas or suggestions would be highly appreciated :-) -- Atte http://atte.dk http://modlys.dk