The SmartWhois plug-in window is displayed only when it is active, and it is automatically closed when the focus is moved to another window. Most likely you have a software running that is changing the focus and activates other windows, or always moves its window on top. We would suggest to close all other running applications one by one to see which one is affecting SmartWhois. Another reason for this behavior could be the mouse cursor settings on your computer. Certain mouse driver utilities allow you to configure the cursor to activate the window under the cursor, or even bring it to the foreground. When these features are enabled, they will prevent SmartWhois window from staying open.
