The degree of success evidenced by the early sales of Amazon's Kindle Fire tablet computer, while considerable, can now be characterized to some extent as too good to be true. After the rush of promotion and subsequent high sales numbers, consumer complaints are beginning to surface regarding the Fire's performance.

According to the New York Times, this is already leading certain figures in the market, such as Jakob Nieslen of consulting firm Nielsen Norman Group, to predict a dismal future for the device.

"I feel like the Fire is going to be a failure," Nielsen told the news source. "I can't recommend buying it."

Specifically, the complaints have to do with the Fire's hardware and internal tablet computer accessories. These include the lack of external volume buttons, a sometimes slow web browsing experience, difficulties with the touch screen, an obtrusive power switch that can easily be set off by accident and an inability to lock the device.

Despite this, the continuing promotional blitz surrounding Amazon's tablet is likely to generate additional sales in the near future, along with its low price of $199.

Additionally, CNET reported that Amazon announced an upcoming software update for the device, stating that privacy issues and internet browsing speeds would be corrected.