Currently Spark is always opening Preferences, Broadcast, Profile and other similar window near the main Roster window. If one is keeping roster window in the right bottom corner of the screen, then all these windows will be popping up in this corner, so most of them will be out of bounds. If one will drag such window to some other place, this position is not saved and next time this window will pop up next to the roster window again. I think most of the users prefer to keep roster window near the systray, so most of them have to drag Preferences window to be able to press Save/Apply buttons. At least in Windows XP. Maybe in other OSes too.