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You're regged on the EU forum, so you have the EU game. There's a bug which sometimes sets up the US game. Read the sticky at the top of this forum on how to sort out the EU client. It only takes a couple of minutes.
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Actually I bought the EU version and registered on the US forum first.
Anyway, it seems that it has passed the checksum BUG now. I started installing with the US updater, then about 300-400MB into downloading I stopped it and started the EU updater and it's now into the "applying" stage. Finally.