Would you be sure your layout is perfectly done? Are you sure that you did not forget something that could transform the printing process or its result into a nightmare ? We are never sure and we really like this little Preflight Verifier Scribus window. It has been here for a while now, but people don't use it as often as they should, and it sometimes would really help them.
The Preflight Verifier window can be launched:
From the Windows menu if you want to keep it permanently
From the Preflight Verifier button of the main action bar, near the Save as PDF button
Automatically when you use the Print or the Save as PDF command unless you deselect the Automatic check before printing and exporting checkbox of the Preflight Verifier preferences
We find a lot of other interesting information in these preferences. In fact, every error category that the verifier can inform you about is listed. Some are already deselected. Actually, the deselected values are part of a default profile...