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Debian Squeeze on Pogoplug Pink: Sudden Segmentation Faults (no replies)

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I had been running Debian Squeeze on my pink Pogoplug since 2011 quite happily. Occasionally, for no reason that I could see, a 'lockup' would occur, and my solution was typically to force a power-down, remove my USB stick, run 'fsck' repairs required, plug back in, and reboot. I learned that some USB brands were more resilient than others. Yes, a bit tedious at times but mostly amazing to watch my 4 watt wonder webserver...

Then, about 2 weeks ago, something weird happened. Some of the programs were failing with 'segmentation faults'. I suspected that maybe the binaries had been corrupted by USB stick errors -- but 'fsck' told me that everything was clean! I had no idea what to do, and didn't want to run in circles for days, so I did an emergency transfer of my webserver environment to an old Fujitsu laptop (slower benchmarks than the Pogoplug!). So far it is working fine in its new role...

So now I don't know what to do next with my Pogoplug. How can I avoid this mystery 'segmentation fault' failure in the future? Should I avoid USB sticks and use portable USB hard drives instead? Should I use the new 'wheezy' scripts and start over again?

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