No, the problem is not Samsung specific. I got the same problem with my HTC Desire (also with a German IP address). It's some ad that redirects your browser to the smartphonegirls booking page. I've installed AdFree on my rooted phone and haven't been redirected since.
In my opinion the biggest problem is the fact that wap billing is still so "easy" and hardly controllable. But that would be a case for some - in this case German - court.