in reply to
Device::USB ubuntu 13.10 and bulk read write problem
I'm wondering if there may be an issue with the version of libusb installed on your system and Device::USB.
Looking at Bug #90439 for Device::USB, someone was encountering "segfaults" and the module's maintainer suggested a possible work around of installing libusb 0.1. I realize that you're not hitting the exact same issue, but I'm just wondering if you might still be hitting an incompatibility between the code in Device::USB and your system's libusb.