[LAU] ubuntu maverick + jack

hello i recently switched my os from debian squeeze to ubuntu maverick. ok. since years i am useing the nice edirol ua-25 sound device without any problems so far. but, ubuntu changed this. its seems jack on maverick isnt able to handle a second sounddevice. at least the ua-25 isnt supportet at all and the jackd response with an error message: -jack was stopped with exit status 255 -post shutwodn error 256 -could not connect to jack sserver as client - overall operation failed. trying to get pd running with alsa for instance, results in some io stuck, no sound s playing. the fundamental integration of the pulseaudio server seems to work well for the very basic of buildin soundsupport, but at least for me its an unbreakable barrier for a further useage of this distro. has anyone a idea how to be able to run jack with a second and external hardware? or simply change the distribution,... to osx ;-). m