Well, maybe that was too quick. Reopening pmount task until confirmation. After you plug in the device, do you have /dev/sdb1? If so, then it's pmount's fault, otherwise it's udev's.
** Changed in: pmount (Ubuntu) Status: Rejected => Needs Info -- udev problem with usb stick https://launchpad.net/bugs/51410 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs