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Updated from 1:02 p.m. EDT

Shares of

Taser International


were among the best-performing technology stocks Monday, rising 16.4% after the Department of Homeland Security said its stun guns could be used on commercial flights in the U.S.

Specifically, Taser announced that a major international airline received approval from the Department of Homeland Security's Transportation Security Administration, which would permit trained personnel to use stun guns on flights to and from the U.S. The company, however, did not identify the airline or say if any stun guns were ordered. Shares of Taser traded up $7.63 to $54.12.

Arch Wireless


rose 16.7% after the company announced late Friday that the U.S. Department of Justice's investigative staff would not challenge its merger with

Metrocall Holdings


. Shareholders approved the merger Monday morning. Once the companies receive final approval from the Federal Communications Commission, which is expected some time this week, they will become a subsidiary of a new holding company called

USA Mobility

. Arch shareholders will own about 73% of USA Mobility, and Metrocall will own the rest once the merger is completed. Shares of Arch traded up $4.66 to $32.57. Shares of Metrocall traded down 59 cents to $61.18.

Shares of

Mediacom Communications

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fell 6% after the company posted a third-quarter loss on weaker-than-expected sales. The cable television company posted a loss of 11 cents a share on sales of $261 million. Analysts polled by Thomson First Call were expecting a profit of 1 cent a share on sales of $266.1 million. Mediacom said that Hurricane Ivan disrupted operations in many of its cable systems in Alabama, Florida and Mississippi during the quarter. Excluding the impact of Hurricane Ivan, the company's sales would have been $263.9 million, it said. The company's quarterly loss, meanwhile, was exacerbated by a derivatives loss of $4.2 million. A year ago, Mediacom recorded a gain on derivatives of $9 million. Shares traded down 40 cents to $6.25.

Symbol Technologies


fell 7.2% after the company said it would revise its financial results for the first nine months of the year and delay its third-quarter 10-Q filing by two weeks after an internal review turned up two inventory reporting errors. The bar-code technology company said the reporting errors would cut earnings during the first nine months by 2 cents a share and sales by $13.3 million. A distribution partner reported one of the errors while the other error occurred at a Symbol-owned distribution facility. Shares traded down $1.09 to $14.11.

Shares of



rose 9.5% after the company

reached an antitrust settlement with


(MSFT) - Get Microsoft Corporation Report

. As part of the settlement, Microsoft agreed to pay Novell $536 million. Novell had alleged that Microsoft's aggressive selling practices drove its NetWare operating system out of market favor. Shares of Novell traded up 65 cents to $7.51.

Other technology volume leaders included


(MSFT) - Get Microsoft Corporation Report

, down 3 cents to $29.28;


(INTC) - Get Intel Corporation Report

, down 13 cents to $23.23;


(CSCO) - Get Cisco Systems, Inc. Report

, unchanged at $19.97;

Sun Microsystems

(SUNW) - Get Sunworks, Inc. Report

, up 2 cents to $4.81;

Applied Materials

(AMAT) - Get Applied Materials, Inc. Report

, up 11 cents to $16.39.and



, up 7 cents to $3.65.