Either party may terminate this Agreement for cause (a) on 30 days written notice to the other party of a material breach if such breach remains uncured at the expiration of such period, or (b) if the other party becomes the subject of a petition in bankruptcy or any other proceeding relating to insolvency, receivership, liquidation or assignment for the benefit of creditors.&nbsp;</p> <p> <b>11.4 Refund or Payment upon Termination. </b>If this Agreement is terminated by Customer in accordance with section 11.3 (<b>Termination for Cause</b>) or section 12.3 (<b>Purchased Services</b>)