It's been a very scary month:

http://www.us-cert.gov/current/

October 29	OpenOffice.org Releases Two Security Bulletins
October 27	Microsoft Releases Security Advisory 958963
October 27	Microsoft Releases Out-of-Band Security Bulletin MS08-067
October 23	Cisco Releases Advisory for Cisco PIX and ASA
October 23	Microsoft Releases Advance Notification for Out-of-Band October Security Bulletin
October 22	Trend Micro OfficeScan Critical Patch Release
October 21	F-Secure Releases Security Bulletin FSC-2008-3
October 16	Adobe Releases Security Bulletin for Flash Player
October 15	Oracle Releases Critical Patch Update for October 2008
October 14	Microsoft Updates Security Advisory 951306