Safely Remove Hardware in Windows 7
If you are using Windows 7, you may notice a long wait when you want to use the Safely Remove Hardware and Eject Media’s tray icon to remove your USB drive or other hardware safely. There is no explanation about this problem from Microsoft, but by looking at its behavior, it seems that when user clicks the icon, Windows tries to populate all the devices and printers attached to your computer. This is just my observation, so it may not exactly the reason.
