Expect to get a prompt to update your Microsoft Security Essentials (MSE) tomorrow:
As part of regular update of our antimalware technology to address the latest in the threat landscape, MMPC is planning to release a new antimalware engine on 16 November 2010
Affected products: Microsoft Security Essentials (MSE), Forefront Client Security (FCS)
Engine Version will be in the range of 1.1.640X.0
Don’t use MSE yet? Download it here – http://www.microsoft.com/security_essentials/