Rather than fix the problems with the gadgets in Windows Vista or 7, Microsoft is urging people to disable gadgets completely. After a vulnerability was announced (detailed emerge at the Black Hat 2012 conference), Microsoft offered the temporary fix of disabling the gadgets. A more permanent solution may come in the future, but that is unknown.
With the release of Windows 8, gadgets will not be supported and will be replaced with live tiles, which have a lot more potential and functionality, in my opinion.
Now, Microsoft has issued a Fix It solution to disable Gadgets and the Sidebar. These features, if left enabled, may allow the execution of arbitrary code, and could allow attackers to take complete control of a person’s system, Microsoft warns in a Knowledge Base article.