Windows Security Update (Critical)

This update is labelled Critical by Microsoft.

Conficker (or Win32/Conficker.B, also known as Downadup) can take over your system with Administrator rights, lock you out or bypass your passwords.

Security patch download:
http://www.microsoft.com/downloads/details.aspx?familyid=0D5F9B6E-9265-44B9-A376-2067B73D6A03&displaylang=en

Further reading:
http://www.microsoft.com/security/portal/Entry.aspx?Name=Worm:Win32/Conficker.B

http://news.bbc.co.uk/1/hi/technology/7832652.stm