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Assume you run new version of the IDE (say, NB 6.5) and have stored setting for previous version (say, NB 6.1). During the first start, the IDE asks if user wants to import settings. But IDE start takes significant time, so user may switch to another application during this, and so he will not see this warning. So he will be confused trying to find where is the IDE which he has started. My suggestion is: either to make that import dialog to be a frame (in this case, user will see it in the taskbar) ot to make it appearing above all other windows (so that user will see it in any case).