Disable Windows Sidebar and Gadgets NOW on Vista and Windows 7. Microsoft warns of security risk
Users of Windows Vista and Windows 7 have been advised to completely disable their Windows Sidebar and Gadgets, in response to what appears to be a serious security risk.
The Windows Sidebar is a vertical bar that can appear at the side of your desktop, containing mini-programs (known as gadgets) that can provide a number of functions such as a clock, the latest news headlines, weather report and so forth.
A security advisory issued by Microsoft’s security team advises that vulnerabilities exist that could allow malicious code to be executed via the Windows Sidebar when running insecure Gadgets.