Guido, are you on Oneiric? Did you install all the updates? Did you remove and recreate your printer (or at least change the driver to Foomatic/hpijs-pcl5e)?
If you have still problems, please start a new bug report and follow the instructions in the sections "CUPS error_log" and "Capturing print job data" of https://wiki.ubuntu.com/DebuggingPrintingProblems.
Guido, are you on Oneiric? Did you install all the updates? Did you remove and recreate your printer (or at least change the driver to Foomatic/ hpijs-pcl5e) ?
If you have still problems, please start a new bug report and follow the instructions in the sections "CUPS error_log" and "Capturing print job data" of https:/ /wiki.ubuntu. com/DebuggingPr intingProblems.