I think part of the reason why some people find it so hard to understand why women are still discriminated against, is that we look at the current legal and educational systems (which look quite good for women, compared to, say, the situation in 1800). But we're still living with the effects of earlier, more male-biased systems, and thinking we're not.
An example I came across the other day is this: I was chatting to a girl who's in her first year at Oxford, at St. Hilda's (which used to be a women's college and has recently gone mixed). She was saying how unfair and unnecessary women's colleges were 'in this day and age'. There's no reason why a woman educated at Oxford now, shouldn't hope to become a professor or vice-chancellor: indeed, it'd be encouraged. So she thinks that women, as Bonsoir said earlier in the thread, have it pretty good.
But, although it all looks nice and equal now, this girl is being taught by people who went to university up to 40 years ago. Back then, there were over 6 times as many colleges for men as for women, so far fewer women were able to access this elite education. Unsurprisingly, the majority of people teaching and researching (and getting paid!) at high levels, are men. It'll take some time for the equality imposed on the new people coming through the system, to make its way to the top levels.
It amazes me that quite intelligent women (like the girl I was talking to), don't realize that the equality they're seeing now, is only a whitewash over a much longer-established system of inequality, which will take a long time to dismantle.