Along with a critical security update for Windows Server, Microsoft has patched the Windows version of PowerPoint to overcome an important vulnerability. But where's the update for the same issue in PowerPoint for Mac?

May is shaping up to be a quiet month for systems administrators, at least as far as security patches from Microsoft are concerned. The company is also changing the way it indicates the importance of specific security updates.

An update for a security problem disclosed last month in Microsoft Office for Mac 2008 has finally been released. But there's no sign yet of the corresponding update for Office 2004.

August's Patch Tuesday has seen the delivery of 14 security bulletins from Microsoft. More than half are rated critical, and a total of 34 vulnerabilities are addressed.

Microsoft has provided its customary advance notice of security bulletins, and it looks like August's Patch Tuesday is going to be a big one with a record 14 bulletins.

March 2010's Patch Tuesday was, as anticipated, a low-key affair with just two bulletins. But Microsoft has also warned of new and publicly disclosed vulnerability that is being exploited in older versions of its Internet Explorer browser.

Microsoft has provided advance notification that two bulletins will be issued on this month's Patch Tuesday, addressing a total of eight issues.

Microsoft has issued a baker's dozen security bulletins covering 26 vulnerabilities in Windows and Office.