Patching an amazing 31 vulnerabilities, including bug used in Pwn2Own hacking contest to break IE8. Here is a computer world write up on the patches. http://www.computerworld.com/action/article.do?command=viewArticleBasic&articleId=9134156
The patches contain fixes for Windows, Internet Explorer (IE), Excel, Word, Windows Search and other programs, including 18 bugs marked “critical.”
If you like using Internet Explorer (IE) make sure you read this and get the security update: Microsoft Security Bulletin MS09-019 – Critical