Analysts are concerned that Apple's financial results may disappoint for its current quarter.
A report on The Street warns that news from two firms focused on the digital music player market suggest demand for these products to be slowing down.
The report speculates this could affect Apple's performance, because its: "Popular iPod music players have supercharged the company's revenue and earnings over the last two years."
As indicators, it cites flash memory supplier SigmaTel's recent reduction of its revenue predictions for its current quarter. It did this because it was experiencing: "slowing demand from manufacturing customers and worse-than-expected retail sales of flash-based players".
Apple uses SigmaTel chips in its iPod shuffles, while SigmaTel refused to discuss its client, it did describe the slowdown as "broad-based".
Apple competitor Creative Technology has also described reduced revenues for its current quarter.
The report also points out that Apple's recent price cuts on its iPods and 1GB iPod shuffle "may point to slow demand". It also cites rumours that Apple may have more stock in hand than the company anticipated.
"The market has definitely slowed down," Shyam Nagrani, principal analyst with industry research firm iSuppli told The Street. "I have a feeling that [Apple's] results won't be as good as they were in the first [calendar] quarter."
Other analysts argue against these conclusions, pointing to seasonality, and Apple's own predictions of a relatively flat sequential quarter as proof that the company remains in control.