Exhibit 23(b)
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in this Registration Statement on Form S-4
of our report dated February 22, 2007, except with respect to our opinion on the Consolidated
Financial Statements insofar as it relates to the effects of changes in segments discussed in Note
20, for which the date is May 23, 2007, relating to the financial statements, managements
assessment of the effectiveness of internal control over financial reporting and the effectiveness
of internal control over financial reporting, which appears in the Current Report on Form 8-K dated
May 23, 2007. We also consent to the references to us under the headings Experts in such
Registration Statement.
/s/ PricewaterhouseCoopers LLP
Charlotte, North Carolina
February 12, 2008