cnbiz850 wrote: > What can be the difference related to mouse listener between having the moving average lines and having certain other indicators? Nothing is different. The only thing it could be is application mixing ddraw & GUI calls (to draw charts & text) which is extremely expensive on Wine. And when you moving mouse from chart area to other part of GUI it redraws the entire program, or big part of it. Try enabling +bitmap debug channel and see if something trying to create huge bitmap when memory usage spikes.