One of the advantages of arbitration is the certainty that comes with it. While arbitration awards can be challenged in court, it is extremely difficult to overturn an award. In fact, courts will vacate, or refuse to confirm an arbitration award only if there was a serious conflict of interest or corruption on the part of a neutral arbitrator, or the arbitrators exceeded their powers. This latter ground, the arbitrators exceeding their authority, is most frequently used as a basis for setting aside an arbitral award. A recent decision by the Swedish Court of Appeals setting aside a US $173 million arbitration award provides some guidance on how this standard may be applied.