I just updated the list of MIR PhDs. The most notable update is the thesis by Adam Berenzweig. Unfortunately his thesis is not publicly available for download, but it seems like he has found an answer to why we've been observing hubs using certain similarity measures for music. Quoting from his abstract: "A practical problem with this technique, known as the hub phenomenon, is explored, and we conclude that it is related to the curse of dimensionality."
I'm sure there's still plenty of dissertations missing in the list and I'll be happy to add any that are sent to me. (I'll also be happy to update any broken links or missing information...)
Btw, the list is slowly approaching 100 entries now. The Matlab script I wrote to generate the html files and statistics now takes almost 5 seconds to complete.