The Nasdaq was down 2% in recent afternoon trading, falling more sharply than the S&P 500 and the Dow, both off less than 1.5%.

Apple (AAPL) was trading down 2.2%. Today Samsung (005930KS) unveiled a new Galaxy model it hopes will rival the iPhone 5, while Forrester Research’s George Colony questioned the company’s future without Steve Jobs. Microsoft (MSFT) was also moving down 2.2%, despite Stifel Nicolaus‘s belief the stock can climb 20%.

Big names including Oracle (ORCL), Cisco (CSCO) and Intel (INTC) were also losing ground, with all three down more than 2%.

LinkedIn (LNKD) was one bright spot, rising 7.2% following its better-than-expected first-quarter earnings. Dolby (DLB) was climbing on an earnings beat as well, along with news Microsoft had chosen its Dolby Digital Plus to deliver audio in its  Windows 8 on tablets and PCs.