Minor bug If you have Windows client, and have the preferences tab selected, then click advanced and then you don't close the "Advanced Preferences" pop up window, then in the system tray right click on the BTSync icon, and select exit the icon disappears and the Adv Pref Popup goes to "Not Responding" and you have to do a force close on the window. It seems like some miscommunication between threads/processes, but I'm not too sure of the cause but you can replicate it. lvdata