pdf IFilter for windows 64 bit
Released (not by Microsoft or Adobe J , yes none of them) by FoxIt. http://www.foxitsoftware.com/pdf/ifilter/
It supports x64 only . they are developing a new one forIA64 .
I am running Vita 64 bit, and I was really waiting for thatrelease . now I can index a whole new set of articles and documents