Hi, I originally reported this problem here: https://bugzilla.kernel.org/show_bug.cgi?id=35212 Summing up, the external hard drive will produce an io-error after about 30 minutes of being connected. After such event, system does not notice if the device is re-connected upon disconnection. I am attaching the relevant portion of /var/log/messages. The problem happens on an up-to-date Fedora 15 x86_64 (running kernel 2.6.40.3-0.fc15.x86_64) on a Clevo P150HM laptop and Lacie Rugged USB 3.0 hard disk. Please let me know if I can provide more information Regards, Julian
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