UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): January 11, 2005

QLOGIC CORPORATION

(Exact name of registrant as specified in its charter)

Delaware	0-23298	33-0537669
(State of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

26650 Aliso Viejo Parkway, Aliso Viejo, California	92656
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (949) 389-6000

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

[ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

[ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

TABLE OF CONTENTS

	Item 2.02 Results of Operations and Financial Condition
	Item 9.01 Financial Statements and Exhibits
SIGNATURES
EXHIBIT 99.1

Item 2.02 Results of Operations and Financial Condition

     On January 11, 2005, the Registrant updated previous guidance for its fiscal third quarter ended December 26, 2004. A copy of the press release issued by the Registrant concerning the foregoing results is furnished herewith as Exhibit 99.1 and is incorporated by reference.

     The information contained herein and in the accompanying exhibit shall not be incorporated by reference into any filings of the Registrant under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except as shall be expressly set forth by specific reference in such filing. The information in this report, including the exhibit hereto, shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

Item 9.01 Financial Statements and Exhibits

(c)   Exhibits

99.1   Press Release*, dated January 11, 2005, updating previous guidance for QLogic Corporation’s fiscal third quarter ended December 26, 2004.

*   The press release is being furnished pursuant to Item 9.01, and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	QLOGIC CORPORATION
January 12, 2005	/s/ Anthony J. Massetti Anthony J. Massetti Vice President and Chief Financial Officer

EXHIBIT INDEX

Exhibit
Number	Description of Document
99.1	Press Release, dated January 11, 2005, updating previous guidance for QLogic Corporation’s fiscal third quarter ended December 26, 2004.