New research released by Sophos has revealed a disturbingly high level of malware on Mac computers -- with both Windows and Mac threats being discovered.
Sophos experts analyzed a snapshot of 100,000 Mac computers running its free anti-virus software, and discovered that one in five machines was found to be carrying one or more instances of Windows malware.

Although Windows malware on Macs will not cause symptoms (unless users also run Windows on their computer), it can still be spread to other computers. Additionally, Sophos's analysis shows that 2.7 percent (one in thirty six) of Macs were found to be carrying Mac OS X malware.

Apple released the third developer preview of its OS X "Mountain Lion" operating system for Macs and Macbooks. The Developer Preview 3 (Build 12A178q) was released to members of the Mac Developer Program. While a change-log is not listed, a number of new known issues with the build were listed, which Apple, along with its MDP partners are working on. OS X "Mountain Lion" is Apple's next major operating system for Macs, Macbooks, Mac Pro, and Mac Servers. It is slated for late Summer, 2012.

Launched yesterday as a developer-preview, Apple's OS X "Mountain Lion" will support fewer Macs than its predecessor, probably because of increases in hardware requirements for smooth operation that older Macs can't quite guarantee. The support list for Mountain Lion looks like this:

• iMac (mid 2007 or later)
• MacBook (13-inch Aluminum, 2008), (13-inch, plastic, Early 2009 or later)
• MacBook Pro (13-inch, Mid-2009 or later), (15-inch, 2.4/2.2 GHz), (17-inch, Late 2007 or later)
• MacBook Air (Late 2008 or later)
• Mac Mini (Early 2009 or later)
• Mac Pro (Early 2008 or later)
• Xserve (Early 2009)

As you can see, some x86 Mac models are out of the support list, including importantly, the pre-Unibody plastic Macbook Pros. Perhaps Apple will support Mac OS X "Lion" with security updates for a lot longer.

Earlier today, Apple unveiled a developer preview of its upcoming operating system for Macs, Macbooks, Mac Pro, and Mac Servers, codenamed "Mountain Lion". It could be observed that Apple mentioned the new OS as simply "OS X", without the "Mac" (as in Mac OS X). A quick run through the new developer preview by The Verge, revealed that the change took effect in the software as well, as all about boxes and information pages reflected it. The article also notes that Apple conspiracy theorists may draw a line between today's development and the 2007 decision to rename the company Apple Inc., from Apple Computer, indicating that Apple is prioritizing on its portable computing device product lines a lot more than its core product, the Mac.