Category talk:City and town halls in the United States

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Is there any way that a bunch of Categories can vanish on Wikipedia in under a minute? There were just tens (I wouldn't say hundreds) of articles inside "Cat:Town halls in the United States" and even one called "Cat:Village halls in the United States" and literally they all just vanished in one minute without leaving any history behind. Villages was even connected to a "Cat:Event halls in the United States" and even one I think was "Cat:Local government buildings" They all vanished in a split second and I can't figure out how something could vanish that fast. CaribDigita (talk) 02:14, 7 June 2010 (UTC)