[Scribus] Font substitution

[ols6000 at sbcglobal.net]

When I open MyDoc.sla on a Linux (FC6) machine with Scribus 
1.3.3.9cvs, I get a Font Substitution dialog, which says

    Original                 Substitution
1) Times New Roman Bold     tt Times New Roman Regular
2) Times New Roman Regular  tt DejaVu Sans Condensed Bold
3) Univers Bold             tt Times New Roman Regular
(tt is a symbol of two overlapped Ts, which I interpret as TrueType)

In the drop-down lists for substitution fonts, I find all three of 
the original font names: tt Times New Roman Bold, tt Times New Roman 
Regular, and tt Univers Bold. Why is Scribus trying to substitute 
different fonts?

I selected the same fonts as substitutions, and checked the box to 
make permanent. Now if I save, close, then open the same document, it 
takes about 30 sec to open, compared to instantaneous before the font 
substitutions.

What is going on here, both in the request for unneeded font 
substitutions, and the long time to open?