Running Mac OS 10.6.6 on a quad core 2.66 Ghz, Intel Core i5 Mac with 4GB memory, using Gutenprint 5.2.6. printing to an HP DesignJet 2500CP. Using CS3 Photoshop or Illustrator. Regardless of how I specify Custom paper size, landscape or portrait, print jobs all cut off at 36" long regardless of image size or paper size (in excess of 36" length). Does the Gutenprint driver support paper lengths in excess of 36"? Prior combos of the Mac OS and earlier versions of Gutenprint allowed me to print landscape up to 120".