UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q/A

(Amendment No. 1)

QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2006

Commission file number 0-24061

US LEC Corp.

(Exact name of registrant as specified in its charter)

Delaware	56-2065535
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

Morrocroft III, 6801 Morrison Boulevard
Charlotte, North Carolina 28211
(Address of principal executive offices)(Zip Code)

(704) 319-1000
(Registrant’s telephone number, including area code)

Not Applicable
(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes þ No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act:

Large Accelerated Filer o Accelerated Filer o Non-Accelerated Filer þ

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o           No o

As of May 12, 2006, there were 30,793,154 shares of Class A Common Stock outstanding.

Explanatory Note

     This Quarterly Report on Form 10-Q/A (Amendment No. 1) (the “Amendment”) is being filed by US LEC Corp. (“US LEC”) to amend US LEC’s Quarterly Report on Form 10-Q for the three months ended March 31, 2006. Part II, Item 6 is being amended to re-file Exhibits 10.1 and 10.2 as a result of comments received from the Securities and Exchange Commission (“SEC”) in connection with a confidential treatment request with respect to such exhibits and US LEC’s amended request for confidential treatment with respect to such exhibits.

Part II. Other Information

Item 6. Exhibits

The following is a list of exhibits filed as part of this Form 10-Q/A:

Exhibit No.	Description
10.1*	Settlement Agreement and General Release between Sprint Communications Company L.P., on behalf of itself and all parent, subsidiary and affiliated corporations, excluding the business of the Sprint local telecommunications division operations, and US LEC Corp., and all of its affiliates or subsidiaries.
10.2*	Settlement Agreement between MCI, LLC (formerly known as MCI, Inc.) and all of its subsidiaries, and US LEC Corp. and all of its affiliates or subsidiaries.
31.1	Rule 13a-14(a) Certification of Chief Executive Officer
31.2	Rule 13a-14(a) Certification of Chief Financial Officer

* Certain portions of these exhibits have been omitted pursuant to a request for confidential treatment filed with the Commission.

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 thereunto duly authorized.

US LEC Corp.
By:	/s/ J. Lyle Patrick
	J. Lyle Patrick
	Chief Financial Officer
	February 6, 2007

Exhibit Index

Exhibit No.	Description
10.1*	Settlement Agreement and General Release between Sprint Communications Company L.P., on behalf of itself and all parent, subsidiary and affiliated corporations, excluding the business of the Sprint local telecommunications division operations, and US LEC Corp., and all of its affiliates or subsidiaries.
10.2*	Settlement Agreement between MCI, LLC (formerly known as MCI, Inc.) and all of its subsidiaries, and US LEC Corp. and all of its affiliates or subsidiaries.
31.1	Rule 13a-14(a) Certification of Chief Executive Officer
31.2	Rule 13a-14(a) Certification of Chief Financial Officer

* Certain portions of these exhibits have been omitted pursuant to a request for confidential treatment filed with the Commission.