IBM should have negotiated with Jeff when he put down his papers. They have 90 days notice period, right? For 90 days IBM failed to convince him to stay with them, and now it starts suing him for a silly reason. Being at such a top position, he might have contributed a lot to tye company and got nothing from the company in return. I suppose he didn't like the pay or corporate politics and want to leave the company. I personally believe that this is a tit-for-tat for IBM's hire-n-fire policy