Apple Safari before 3.2 does not properly prevent caching of form data for form fields that have autocomplete disabled, which allows local users to obtain sensitive information by reading the browser's page cache.
http://lists.apple.com/archives/security-announce//2008/Nov/msg00001.html
http://lists.apple.com/archives/security-announce/2008/Nov/msg00002.html
http://secunia.com/advisories/32706
http://secunia.com/advisories/32756
http://support.apple.com/kb/HT3298
http://support.apple.com/kb/HT3318
http://www.securityfocus.com/bid/32291