For some reason, Adobe Flash or some plug-in(Mozilla Plug-In Container in the task manager) lowers the volume of all other applications running(mainly iTunes). It lowers the volume for maybe 10seconds and then it goes back to normal, and just keeps doing this. It took me a while to figure it out what was causing it but closing the plug-in container makes it stop(in the RealTek volume menu it shows the plug-in container volume at normal while everything else is turned down). What's weird though is it does this even if there's no flash video on(I'm assuming advertisements may cause this) or even after I close any/all windows using Flash. Does anyone know how to fix this? BTW, it just started doing this maybe a week after I updated Flash.