On Mon, Sep 10, 2012 at 10:24 PM, Erik Moeller <erik(a)wikimedia.org> wrote:
No, it's not normal; it's a bug with thumbnail
generation on the
cluster. See
https://bugzilla.wikimedia.org/show_bug.cgi?id=39975 if
you're interested in the technical details.
This turned out to be pretty hairy, sorry for the long time it took to
get it resolved. It should now finally be fixed; please let me know if
you're still seeing it.
--
Erik Möller
VP of Engineering and Product Development, Wikimedia Foundation
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