This article was previously published under Q246113
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When you start multiple new instances of Internet Explorer (for example, by pressing CTRL+N) and then move the windows around the screen, the browser's window data may be corrupted. This occurs only on multiple-processor computers with the color palette set to 256 colors.
This behavior is caused by the way Mshtml responds to the WM_PAINT message.
To resolve this issue, upgrade to Internet Explorer 5.01.
To work around this behavior, use any of the following methods:
Set the color palette to more than 256 colors:
Right-click the desktop, and then click Properties.
Click the Settings tab.
In the Color Palette box, click a setting with more than 256 colors.
Disable all but the first processor by adding "Numproc=1" to the Boot.ini file.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.