I have played btsync for two weeks now. It was working pretty well at the beginning, and meet most of my requirements. However after start replicate my photos between my computers, I found couple cases that the new files added to sync cannot be recognized, and sometimes only part of new files added are synced to remote box, and btsync reported synced. My folders have hundreds to thousands photos, size from 4GB to 20GB. Remove the folder from btsync and add it back doesn't help. The indexing stopped at different spots. Remove the folder and added it back with different secret seems a workaround. I am using 1.1.48 on linux, and windows as well.