On November 22, 2011, the Court of Appeals for the Eleventh Circuit issued a per curiam opinion that piqued the interest of bankruptcy practitioners nationwide and sent secured creditors scrambling to ensure that their rights to a deficiency claim had been properly preserved in pending bankruptcy cases. The Eleventh Circuit held that the IRS had waived its right to an unsecured deficiency by filing a proof of claim that evidenced a secured claim but failed to note that a portion of the claim may be unsecured.