Do you know a lucky Mac cultist who will get Apple’s fastest and largest iMac under the tree this year? Before you wrap one of the new 27-inch iMacs with Intel’s Core i7 processor, you might want to test the machine. A number of customers of the quad-core custom-built iMacs are reporting damaged screens or computers that show up dead on arrival.

Owners on Apple’s support discussion boards report Core i7 iMacs arriving either with a crack in the bottom left corner of the computer’s screen or the desktop computer won’t boot. Some customers report a two-week waiting period for a replacement.

George Dearing‘s three-year-old son got his hands on dad’s iPhone and – oops – found himself staring at the App Store. While it was still logged in to dad’s iTunes account.

AT&T will lose its exclusive hold on the iPhone in June 2010, analyst Brian Marshall said recently. In a television interview, the AmTech analyst also said Apple will receive $300 per iPhone AT&T and other carriers sell, down from the current $450 subsidy from the U.S. carrier.

Talking to Bloomberg TV, Marshall said iPhone owners, who comprise just 4 percent of AT&T subscribers, use 40 percent of network bandwidth.

BusinessWeek ran late yesterday an interesting article interviewing Phil Schiller about the App Store. While it’s good to see Schiller again talking publicly about the approvals process, it’s sad to see Apple still ignoring key issues.

Until I tried Neuhaus Laboratories’ T-2 vacuum tube amp, I thought I had a pretty good speaker system hooked to my Mac. It was a three-piece ensemble with a pair of nice satellites and a honking big subwoofer. It pumped out 200-watts and I thought it sounded great.

But then I hooked up the T-2 Amplifier, and it’s literally night and day. I know this sounds like an old cliche — but it’s true. Even a half-deaf old punk like me (too many ear-piercing concerts) can hear the difference. It’s striking — and it’s absolutely glorious.

Cover Up is a new $0.99 iPhone app that masks embarrassing bathroom noises with other bathroom sounds, like running water, a hand dryer or blow dryer.

Trying to mask the sound of a giant anal raspberry is like spraying deodorant to mask a pooey smell: it never really works. But it may be useful if you’re known to the person in the next stall.

More info at Coverup.me.

There’s nothing better than gazing up at the stars on a night out. For $3, Pocket Universe: Virtual Sky Astronomy, using sorta-augmented reality, lets the astronomically impaired among us impress our dates.

In a sign of the iPhone’s power to attract, China Unicom Friday said it expects to have 10 percent of the nation’s 3G users by 2012. The comments by an unnamed executive of the country’s second-largest wireless carrier to China Daily echo those made publicly earlier this week.

China Unicom Chairman Chang Xiaobing told reporters recently he expects the iPhone will be the best-selling smartphone in the country. China Unicom sales of iPhones coincided with the introduction of the carrier’s 3G network. Although much was made of China Unicom adding only 5,000 when the iPhone launched in late October, the carrier said the iconic smartphone boosted 3G subscribers to over 1 million in just one month.

Hackers have bypassed Apple’s desire to remove support for Intel’s Atom processor from Mac OS X 10.6.2, allowing the increasingly popular netbooks to run Cupertino’s latest operating system. The complicated hack replaces the Mac OS X kernal, according to reports.

The low-powered Atom processor from Intel is often used by low-cost netbooks. Apple currently offers no hardware officially supporting the Atom chip.

The Pogoplug is a fantastic little gizmo that turns any USB hard drive into your own little cloud server accessible over the Internet. We gave it a very enthusiastic review.

Now the company behind the device has issued version 2 — updating both hardware and software — and it’s all about multimedia.