OpenOffice Printing Problem

When printing from OpenOffice 1.3.1 everything seems to work fine except that I cannot print more than one copy at a time. That is to say I Go File ---> Print then change copies to say...4 then press print. One copy comes out. Just one, no matter how many I tell it to print. Now I just hit the print button a whole bunch of times. Any ideas?

Printer is an Optera S Series

Try checking the "collate" box when printing multiple copies.

I did that and it worked! I wonder though, why did I need to do that?