Slowwwww Aperture!

So, on a Mac Pro with 12 Cores, 20 GB of RAM, RAID 0 Array capable of more than 500 MB/s, Aperture 3.4 uses one core to update a 40,000+ photos library and redo the thumbnails for all the photos. Even worse, it seems to be even slower than anything I’ve ever seen. It counting ...