Also

* Wyeth Pharmaceuticals said it was served with a subpoena from the U.S. attorney’s office in Massachusetts over pricing practices for its Protonix heartburn drug.

* XM Satellite Radio Holdings Inc. said it hired Infinity Broadcasting Corp.’s vice president of adult top 40 music, Jon Zellner, to become head of music programming.

* Citadel Broadcasting Corp., the fifth-largest U.S. radio station owner, said it received a subpoena from New York state Atty. Gen. Eliot Spitzer in connection with an investigation of record company promotional practices.