I have this "fancy" SanDisk 12-in-1 card reader and a SanDisk Memory Stick Pro Duo Ultra II that I want to write files to. It worked on my PowerBook, but on my mac pro, as soon as I start copying files it just locks up. In fact it sends the entire system into SBOD until I physically unplug it from the USB port, after which OS X thankfully recovers. The entire reason I got the thing was so I could transfer files faster than my devices which use these kinds of cards. But if it doesn't work and I'm forced to use slower methods, that sucks. Anyone else have one of these working with their Mac Pro, or other Intel Mac?