Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Smurfit-Stone Container Corporation (the “Company”) on Form 10-Q for the period ending March 31, 2011 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Paul K. Kaufmann, Senior Vice President and Corporate Controller of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Paul K. Kaufmann
Paul K. Kaufmann
Senior Vice President and Corporate Controller
April 29, 2011

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to Smurfit-Stone Container Corporation and will be retained by Smurfit-Stone Container Corporation and furnished to the Securities and Exchange Commission or its staff upon request.

SMURFIT-STONE CONTAINER Corp 10-Q