I successfully installed the NTFS driver V10.0.1 (eval mode for now) and started a copy of my iPhoto library (115 GB, ca. 50'000 files) to an external USB disk. All worked well and ran quickly (ca. 20MB/sec) until about 1/3 of the way through. Then the system just hung with the error message "Your Mac OS X startup disk has no more memory available for application memory" (see screen shot). The system disk is a 750GB drive with over 250GB free. The system was frozen at this point, so I had to force a shutdown. Upon restart, Disk Utility found nothing wrong with the disk. So why did this happen? Is there a limit to how many files I can copy at once? Is there a way I can get this copy done? Thanks, Jan P.S. Before you ask: YES, I am using Time Machine, but it has its limits and issues, so I create occasional snapshots of my iTunes and iPhoto libraries.