I agree with kiki-do... I think it's all about the humidity. Many types of plants, not just orchids, go through a kind of shock when brought indoors after a beautiful summer outdoors. With the decreased humidity, and likely lower light levels, the plant can't support as many leaves as it could outdoors. When it has shed a few leaves and has reached a level that it can support, it should bounce back just fine. I would be alarmed, also...but it's probably perfectly fine.
As a side-note...every orchid I've ever brought home has done that to me when it was still adjusting to my apartment. They level off in about a month.
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When I get a little money, I buy [orchids]; and if any is left, I buy food and clothes. :mrgreen:
-- Desiderius Erasmus (1465-1536)
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