By Rex Crum The tech sector joined in a broad-market slide Tuesday afternoon, with nearly every major sector leader in the red as concerns mounted about the state of the euro and the ongoing European debt crisis. Among leading tech stocks, Hewlett-Packard Co. (HPQ) fell 58 cents a share to $46.98 with its quarterly earnings on tap for after the market close. Analysts surveyed by FactSet Research estimate H-P will earn $1.06 a share on $29.86 billion in sales for its fiscal second quarter. Leading the decline was the negative sentiment about Europe and whether another so-called "flash crash" of the market could occur, similar to the one that happened earlier this month. Decliners also included EMC Corp. (EMC), Seagate Technology (STX), Microsoft Corp. (MSFT), Dell Inc. (DELL) and Cisco Systems Inc. (CSCO) QAD Inc. (QADI) shares fell 57 cents, or 10%, to $5.14 after the maker of software for manufacturers gave a weaker-than-expected quarterly forecast. The company now expects to lose 4 cents to 5 cents a share on $50 million to $51 million in sales, down from earlier estimates of a profit of 3 cents a share on $54 million in revenue. The Nasdaq Composite Index (RIXF) stumbled, falling more than 36 points, or 1.6%, to 2,317. The Morgan Stanley High Tech 35 Index (MSH) was off by 1.8% and the Philadelphia Semiconductor Index (SOX) gave up nearly 3%. The few gainers included IBM Corp. (IBM), up 9 cents at $130.57, and RightNow Technologies Inc. (RNOW), which rose 51 cents a share, or 3.3%,to $15.91. Before the market opened, FBR Capital Markets analyst David Hilal raised his rating on the software firm to outperform from market perform. Hilal said that he expects RightNow to get more deals involving contact centers for customer-service operations and sign more bookings in the coming months.