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The following summarizes our principal contractual commitments, excluding open orders for purchases that support normal operations, as of December 31, 2012 (in millions):

Pledged Securities

We have pledged or otherwise restricted $99 million and $156 million in 2012 and 2011 of our cash and marketable securities as collateral for standby and trade letters of credit, guarantees, debt related to our international operations, as well as real estate leases.

Inventory Suppliers

During 2012, no vendor accounted for 10% or more of our inventory purchases. We generally do not have long-term contracts or arrangements with our vendors to guarantee the availability of merchandise, particular payment terms, or the extension of credit limits.

Legal Proceedings

The Company is involved from time to time in claims, proceedings, and litigation, including the following:

Beginning in March 2003, we were served with complaints filed in several different states, including Illinois, by a private litigant, Beeler, Schad & Diamond, P.C., purportedly on behalf of the state governments under various state False Claims Acts. The complaints allege that we (along with other companies with which we have commercial agreements) wrongfully failed to collect and remit sales and use taxes for sales of personal property to customers in those states and knowingly created records and statements falsely stating we were not required to collect or remit such taxes. In December 2006, we learned that one additional complaint was filed in the state of Illinois by a different private litigant, Matthew T. Hurst, alleging similar violations of the Illinois state law. The Hurst case was dismissed with prejudice in June 2012. All of the complaints seek injunctive relief, unpaid taxes, interest, attorneys’ fees, civil penalties of up to $10,000 per violation, and treble or punitive damages under the various state False Claims Acts. It is possible that we have been or will be named in similar cases in other states as well. We dispute the allegations of wrongdoing in these complaints and intend to vigorously defend ourselves in these matters.

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