[linux-audio-user] problems when restarting mixxx in same session

i've been using mixxx (http://mixxx.sourceforge.net) with no problems for some time, but recently - *around* the time i patched my alsa driver with emu10k1 multi-channel, and updated qjackctl to the latest - it's being weird: * it starts without any drama the first time in a session (by that, i mean the first time i start up mixxx after having booted my computer), but if i close it and try to start it again, it's ouputs show up in qjackctl, but there is no gui ... even if i stop jackd and start again, the same problem - outputs, but no gui ... * if i delete the .mixxcfg in my home directory, then it starts again, but this requires me to each time reconfigure mixxx :( * if i reboot the computer (without deleting mixxx's config file), then it starts properly with all configurations intact :) if i start mixxx from the command line when it doesn't show a gui, here's what output i get: i haven't been able to discover any more detailed debug output ... if it's any help, this is how i start jack (from qjackctl): #jackd -T -R -P60 -u -dalsa -dhw:0,3 -r48000 -p256 -n2 -s -S -P -o16 any help appreciated. shayne