[Scribus] scribus and image colours

[johannes kepler]

hi,

if i want to print imported images the colours are flat and low saturated. the 
same problem appears if i export the scribus files into pdf format.
i use four colour images (cmyk) and a four colour printer (minolta cf 911p).

here are two pdf files:
http://members.nextra.at/grabner/scribus/Sterbebild_Drack_CrlDrw.PDF
this file was created with coreldraw 8.0 and acrobat 4.0 pdf export -as i do 
it currently. the colours are as i want them in print.

http://members.nextra.at/grabner/scribus/Drack_Sterbebild_Scribus_72dpi.pdf
this file was created with scribus 1.0.1 pdf export. th colours are low 
saturated.
moreover i can't use the pdf/x-3 options from scribus.

thx.
joerg