I'm running Windows XP (SP2), with Internet Explorer 6.0.2900. I keep having a problem when closing a window. Wyen I click on the "X" in top right corner to close a window, the window contents disappear, but I'm left with a blank screen (labeled "about:blank - Microsoft Internet Explorer"), which I can't close by clicking on the top-right "X." The only way I can get the blank window to close is by calling up the Task Manager (Ctrl+Alt+Del), highlighting "about:blank - Microsoft Interner Explorer," and clicking "End Program.

 

How can I eliminate this problem?