the NYSE has postponed all delistings until the economy recovers. Mesa is traded on the NASDAQ and they havent said much. Basically Mesa can and will appeal the decision and it will get dragged out. No one knows how long but the bad economy will be playing towards Mesa's case.

Heres an article about another company that was facing delisting and how it works. Delisting Detailed: What It Takes to Get the Boot From an Exchange | Dear Dagen | Financial Articles & Investments News | TheStreet.com

""The company(NOT MESA) is working cooperatively with the Nasdaq staff and will request a hearing with the Nasdaq Listing Qualifications Panel. As a result of this hearing, any action by the Nasdaq to delist the Company's common stock will be stayed pending a decision by the Nasdaq Listing Qualifications Panel," the release says."