text: Parmalat sues former auditors for at least \$10 bn LONDON, August 18 (New Ratings)  The insolvent Italian dairy food product company, Parmalat Finanziaria SpA (PAF.FSE), filed a lawsuit against its former auditors, Deloitte  amp; Touche and Grant Thornton, today, seeking damages of at least \$10 billion. 