I think the redraw storms start whenever the main window is resized horizontally and there are too many tabs to fit in the horizontal space (so that the tab menu button has appeared). Vertical resizes do not cause the problem. It is also safe to resize horizontally or vertically before the tab menu button appears. Once the storm has started it stops whenever the tab menu button disappears, whether this is due to closing some tabs or widening the window. The storm starts again whenever the tab menu button reappears, whether or not there has been any more resizing. Do other people see this? Jeremy Henty