ALSO NOTED: Mainframes take center stage at OpenWorld; The top 10 security companies to watch; and much more...

> It's official: AMD and ATI are one. Article

> The mainframe is taking center stage at this year's OpenWorld. Article

> Want to see a company that's successfully rolled-out a nationwide WiFi network? Look no further than your neighborhood McDonalds. Article

> The top 10 security companies to watch. List

> Big Apple Mac fans rejoice: Apple plans to open a third store in Manhattan. Article

> Just how good is Windows Defender? Article

> Plan on buying a PC this holiday season? Microsoft hopes you'll install Vista on it, come January. Article

> Apple's new MacBook Pros are now shipping with whopping 200 GB drives...but where did they get them from? Blog

And Finally... The (defacto) winner of NetworkWorld's networking-related Halloween costume contest. Article