Heck of a HaloHey, this is Apple, right? What's the worry? For 10 years, Apple has demonstrated the hottest hand in gadgets, delivering a string of blockbuster hits. The iPod and iTunes redefined not just music players, but also the business of selling songs. In computers, Apple's Macs were sleeker, premium-priced devices that people found a joy to use and were cool alternatives to sluggish, bloated, virus-plagued PCs. Then came the iPhone. Timing the tipping point for touchscreens perfectly, Apple set the standard for a new generation of smartphones and ushered in an era of fingertip controlled phones and improved Web viewing. The iPhone has been a smashing success, but the device is in its third year, and with China now onboard, it faces fewer new market opportunities. The iPod may get a boost from its new camera feature, but the glory days have passed. And Macs face a resurgent Microsoft ( MSFT) Windows and Intel ( INTC)-powered Wintel effort that threatens to take the shine off Apple's computer sales.