[linux-audio-user] Cannot get qjackctl, jackd, alsa working.

I am trying to get jackd, qjackctl, and alsa working on a pentium d desktop running ubuntu edgy. I am getting these error messages when I start qjackctl: .......... ALSA: final selected sample format for capture: 32bit little-endian ALSA: use 2 periods for capture ALSA: final selected sample format for playback: 32bit little-endian ALSA: use 2 periods for playback 12:38:49.469 Could not connect to JACK server as client. Please check the messages window for more info. **** alsa_pcm: xrun of at least 0.024 msecs **** alsa_pcm: xrun of at least 0.012 msecs 12:38:57.669 MIDI connection change. **** alsa_pcm: xrun of at least 0.534 msecs 12:38:58.077 Could not connect to JACK server as client. Please check the messages window for more info. **** alsa_pcm: xrun of at least 0.124 msecs **** alsa_pcm: xrun of at least 2.709 msecs 12:39:01.196 JACK is stopping... **** alsa_pcm: xrun of at least 2.769 msecs jack main caught signal 15 no message buffer overruns 12:39:01.333 JACK was stopped successfully. Any ideas on how to fix this?