Quicktime updated - disables access to untrusted Java applets
Apple has patched 7 flaws in Quicktime, 6 of which could be used to get malware on to a computer.
Details here: http://docs.info.apple.com/article.html?artnum=306896
Note that QuickTime for Java is no longer accessible to untrusted Java applets (CVE-ID: CVE-2007-3751).
You can download the latest version of Quicktime here