Apple just reported a record $1 billion profit for the quarter that ended in December, but some investors weren't excited about the fine print and the stock bobbled down a bit in extended trading.

Mac sales were up 28 percent by unit, 40 percent by sales.

Sales of iPods were up 50 percent by units, 18 percent by sales, reflecting the broader line of low-end models.

Overall company sales were up 24 percent to $7.12 billion, or $1.14 per share. That blew past expectations of 78 cents per share.

The current quarter may be more disappointing. Apple said it's expecting sales of $4.8 billion to $4.9 billion, and earnings per share of 54 to 56 cents.

Wall Street had been expecting 60 cents during the current quarter.

Apple deflected a bunch of questions from investors about the iPhone, saying more details will be available just before its June launch.

Gene Munster said the iPhone sales forecast -- 10 million units in 2008 -- seems low and asked if Apple's going to be limited by manufacturing capacity.

"It seems like that number should be more than easily achievable,'' he said.