http://blendmaster.name/ like there say, the problem can be libusb, i can´t do more test, because with a restart to cups the problem solved, but this happen me more times...this was one more... and for future problems ii leave the place where i leave the bug on hplip, but i insist the problem can be libusb.
https://bugs.launchpad.net/debian/+bug/344592 https://answers.launchpad.net/hplip/+question/22114 https://answers.launchpad.net/hplip/+question/45340 i have installed libusb-0.1-4 2:0.1.12-13 libusb-1.0-0 2:1.0.0-1 -- Maximiliano Augusto Castañón Araneda Santiago, Chile Linux user # 394821