Let me start by saying that SAT works quite well for me, and you seem to have done a lot of work on it, so thanks, and good work! > p.s. the guy who reports the first crash gets a free beer at BeGeistert :-) It's not a crash, but when detaching tiled windows/stacks the border of the tabs of any windows in the stack you're not dragging are not invalidated properly (a small line of red remains). Not a big deal, but I thought you'd like to know. Anyway, I really like this feature, and as I said, it seems to work very nicely! --Alex