Montbell locked down their US website on Jan. 29, 2010 because of, as they call it, fraudulent access to their Japanese site. (There has also been criticism of Montbell's response: the company posted an explanation in Japanese on their US site (discussion at BPL).) However, Montbell recently updated their US website with an explanation in English. Montbell is sending the same posted explanation to inquiring customers.
I'll let the explanation speak for itself.