I never said they were not real, only that it's users' hack, not necessarily Dropbox' one. I see a bunch of articles asking people to change their passwords - if they believe Dropbox is hacked and not patched yet, changing the password won't do any good. It could even be worse. Anyway, given the fact that passwords in clear texts leaked and that Dropbox doesn't store in clear text (they've had multiple articles on the subject in the past), it's most probably not really a Dropbox hack. Given they recently blogged about phishing [1], I'm sure they were already aware of what's going on.
[1] https://blog.dropbox.com/2014/10/dont-get-baited-by-phishing...