Exhibit 23.2
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of
our report dated February 27, 2008 relating to the financial statements, financial statement
schedule and the effectiveness of internal control over financial reporting, which appears in
º£½ÇɬÇø’s Annual Report on Form 10-K for the year ended December 31, 2007.
/s/ PricewaterhouseCoopers LLP
PricewaterhouseCoopers LLP
Pittsburgh, Pennsylvania
June 5, 2008