You mave have heard about this in the news so I thought I would post this notice from Microsoft for everyone.
This security update (reference MS08-078, Security Update for Internet Explorer) resolves a publicly disclosed vulnerability in Internet Explorer. The vulnerability could allow remote code execution if a user views a specially crafted Web page using Internet Explorer. The security update addresses the vulnerability by modifying the way Internet Explorer validates data binding parameters and handles the error resulting in the exploitable condition.
Microsoft recommends customers prepare their systems and networks to apply this security bulletin immediately once released to help ensure that their computers are protected from attempted criminal attack.
For Full Details visit: http://www.microsoft.com/technet/security/bulletin/MS08-078.mspx