updated 05:05 pm EST, Wed November 11, 2009
Also addresses security holes
A variety of security problems have also been patched, mainly in WebKit, Safari's underlying rendering engine. These include holes in resource sharing, FTP directory listings and the handling of HTML5 media. Other eliminated vulnerabilities are said to have been found in ColorSync, the XML library and the assorted "Open in New" menu commands. Filesizes for the update differ according to the target platform and operating system.