On Thursday, November 11, Apple released a large patch update for the Mac OS-X 6.4 (and 10.5) operating system. The patch addresses 134 vulnerabilities in the 10.6.4 version.
Apple smashes patch record with gigantic update
Fixes 134 flaws with Mac OS X update, 55 in Flash alone
However, as of about mid-day, some systems that were running PGP whole disk encryption have experienced problems when the updates were applied.
See more information at
November 11, 2010, 11:25AM
See http://www.vupen.com/english/advisories/2010/2958 for addition information on operating system versions included in the update