[Scribus] 100% CPU usage when justifying

[zuzikrvx at o2.pl]

Hello folks!
While I am trying to apply paragraph adjustment - justify, my CPU
gets busy and I am waiting long time for this process to be done.
What is this caused by? Additional, I am getting it while applying
adjustment via "Paragraph style" setting and in internal Scribus
text editor.

Specs:
Athlon Thunderbird 1 GHz
512 MB of RAM memory
OS: Linux Ubuntu 6.06.1