On Fri, 2009-07-24 at 18:24 +0300, Jari Suominen wrote:
  Somehow the problem fixed itself. At first jack
crashed at the command
 line to a 'bus error'. But on next run it worked flawlessly. Wonder what
 happened there? But it works!
 But there is still more xruns than when run as sudo. And wonder if the
 RT letters at qjackctl should blink? 
Are you sure you're using the same settings for root and yourself? If
you run qjackctl with sudo, it's probably using the preferences set for
the root account as opposed to running as yourself with your
preferences.
 Sampo