I have a USB 3.0 hard drive which I can write at over 100Mbyte/sec via Linux native filesystems. However, when I use the FUSE-based NTFS filesystem (so I can share the disk with Windows machines), it drops down to 1Mbytes/sec. I'm running an updated Ubuntu 12.04 (with the 14.04 trusty kernel stack) for reference. Thanks, Bill Bogstad