Philosophy is notorious for not answering the questions it tackles.
I thought philosophy is about asking (right) questions, not (necessarily) answering them.
Philosophy might eventually retcon its self-image to that effect once most of its major problems have been solved by non-philosophers, but I'll view that about the same way I view certain crowds' insistence that religion has never been about making empirical claims.
Maybe in modern times a lot of academic philosophers are more interested in keeping questions open so they can keep writing papers on them, but I think most philosophers throughout history have at least sincerely wanted to know the answers to the questions they were thinking about.
Philosophy is notorious for not answering the questions it tackles. Plato posed most of the central questions more than two millennia ago, and philosophers still haven't come to much consensus about them. Or at least, whenever philosophical questions begin to admit of answers, we start calling them scientific questions. (Astronomy, physics, chemistry, biology, and psychology all began as branches of philosophy.)
A common attitude on Less Wrong is "Too slow! Solve the problem and move on." The free will sequence argues that the free will problem has been solved.
I, for one, am bold enough to claim that some philosophical problems have been solved. Here they are: