^ I guess wherever you live in Germany the weather is even worse than in NRW. Mine was shipped Monday and was here a day later, although even Amazon thought it would take at least two.
I live in Berlin and I haven't kept tabs on the weather situation elsewhere so I can't really compare. However, normally, I get the books a day after the shipping announcement, two at the most. But none of the three packages from amazon I'm expecting has arrived, yet, so I blame it on the weather.
Alternatively, I could blame it on Westerwelle, which seems to be en vogue right now...