FYI...

Critical Update: Please Patch Windows with Malware
- http://blog.trendmicro.com/critical-update-please-patch-windows-with-malware/
Aug, 27, 2008 - "After patching 11 vulnerabilities for this month’s Patch Tuesday, spam is being sent that falsely claims that the recipient should immediately install another critical Microsoft update... Patching one’s system using this spam as a guidance, however, downloads a multitude of badness, and one particular malicious piece of malware which is detected as EXPL_ANICMOO.GEN... Malware writers are counting on the urgency of the email’s tone to trick recipients into applying the “patch”..."

(Screenshot available at the URL above.)