I have Windows Vista, KDE 4.1.2 and the newest release of Amarok.  When I go to configure Amarok and click on the On-Screen Display option, I can move the O-S D around the screen, but I cannot disable it.  When I try to uncheck the option, I am unable to click and mouse mouse pointer turns into crosshairs (as if I could move something).  The only way I can click on anything else is to close out that options window.  Thanks!

This is a known issue with the Windows version. Please see here:

https://bugs.kde.org/show_bug.cgi?id=183186