I do not fail to recognize Haneke's above-average film-making skills. For example, I appreciate his lingering on unremarkable-natural-day-lighted settings as a powerful way to force a strong sense of realism. However, regarding the content of this film, I am very sad to see that in the 21st century there is still an urge to pathologize domination-submission relations or feelings (and/or BDSM practices). The problem that the main character has with her mother is unbelievably topical as is the alienation and uncomprehension felt by Walter (I don't mean the frustration of a lover which is not loved back in the same way, which is understandable; I mean that he looks upon her as if she were crazy, or as if he was a monk, come on!). I mean D/s is not something new in the world and I think it is rather silly to treat the subject as if it were something "freakish" or pathological; it isn't. In general, films dealing with this subject are really lagging behind the times.
So, for me, I feel that this film ends up being quite a programmatical film, worried with very outdated psicoanalitical theories (isn't it nearly embarrassing?), and that does not really relate with real-life lives and experiences of those engaged in D/s relationships (personal experience, forums, irc chatrooms even recent scholar studies will show this).