Internet Explorer KB articles
When you visit a Web page that uses a custom pop-up object, Microsoft Internet Explorer 6 closes unexpectedly and generates an error in the Mshtml.dll file. This problem occurs after you install security update 918899 on a Windows XP Service Pack 2 (SP2)-based or a Windows Server 2003 Service Pack 1 (SP1)-based computer. A hotfix is available if you are severely affected by this problem. Otherwise, we recommend that you wait for the next cumulative security update for Internet Explorer.
Microsoft has released security bulletin MS06-042. The security bulletin contains all the relevant information about the security update. This information includes file manifest information and deployment options.