Printing multiple pages per page with openoffice results in the incorrect order of slides. To reproduce: open a presentation in Impress, to do print, set slides per page to 6, select print. Rather than 12,34,56 slides show up 41,52,63. Proof that this is openoffice's fault rather than gnome-print. In Impress, save same document as regular PDF file, one slide per page. Open PDF file in Evince. Go to print, choose 6 pages per page, select print. Output is in the expected order.
Created attachment 293535 [details] sample printed directly from oo.o
Created attachment 293536 [details] PDF viewed and printed in Evince
As an aside, you'll also notice that the margins are significantly different.
As in you get 1,2,3 down the right, and 4,5,6 down the left. I believe that is the same as bug 422661 The landscaping of each slide confuses the cups n-up thing as cups can't find the "human designated rotation" of each slide to work it out. Where the solution I have is to detect we're targeting n-ups and rotate into portrait mode but with a landscape sized page size which lets cups do-the-right-thing. I suspect that if you used print to .ps from OOo and not pdf and opened that in evince that the 6 pages per page may then give the same results as direct from OOo. *** This bug has been marked as a duplicate of 422661 ***