USB Jumpdrive became write-protected

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I've got one of those USB flash drive devices that has been working OK so
far. Now, for some reason, XP reports the device as being "write-protected",
even though there is no write-protect switch of any sort on the device. All
the files are still there and they can be read just fine, but any attempt to
delete a file, copy a file to it, or even to format it results in an error
that the device is write protected! I've tried this on several systems, so
it's actually not an XP issue.

Any idea how the device got into this state? Is there some way to reset this
condition, or should I just give up and start checking the warranty policy?

-- DG


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