There is a simple and effective solution to this problem. In Notepad, type the following lines:
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Control Panel\Desktop] "DragFullWindows"="1"
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Control Panel\Desktop] "DragFullWindows"="1"
Save the file as "Show Window Contents.reg." Double-clicking this file and restarting will fix the problem permanently. Post a message if you find this useful.