Microsoft's single update (MS09-017) addresses fourteen distinct vulnerabilities across all supported versions of PowerPoint, but it isn't how many vulnerabilities that are patched that is causing trouble. Instead, the decision to release the patch for Windows versions while OS X and Works versions remain vulnerable to the same remote code execution risks (including one that is currently being exploited) hasn't gone down well with some people. Microsoft have given various reasons why this is the case, but this mega-update-in-a-patch is still interesting for other reasons.
Apple have updated OS X 10.5 to 10.5.7 as part of the 2009-002 Security Update (available right here), as well as a cumulative update for Safari 3 and the Public Beta for 4. As well as addressing numerous significant security risks, the 10.5.7 update provides a number of stability and capability enhancements and incorporates the Safari 3 update patch. Probably the most surprising element of the Apple update is the overall size of it, 442MB for the point update, and 729MB for the ComboUpdate."
Link to Original Source