I'm facing same issue here with my Samsung SCX-4729FW.When I stop my spooler (cupsdisable Samsung-SCX-472x) and print a PDF from chrome. I see the job in the queue.When I use the command line lineprinter to print exactly the same job ("lp -d Samsung-SCX-472x -o psdebug d00028-001") I see then 2 jobs in the queue. After enabling the queue again. I get the first job printed with these additional pages and the 2nd job printed without such pages.