A quick note for Windows users, the [security update][2] Microsoft promised yesterday did indeed arrive late in the evening. The patch fixes a security vulnerability involving cursor animation and is recommended upgrade for all Windows 2000, XP SP2, Server 2003 and Vista users.

See [yesterday's coverage][1] for more details. 

[2]: http://www.microsoft.com/technet/security/Bulletin/MS07-017.mspx "Microsoft Security Bulletin MS07-017"
[1]: http://blog.wired.com/monkeybites/2007/04/microsoft_to_pa.html "Microsoft To Patch Vista Vulnerability"