The NFLPA filed two lawsuits against the NFL in recent weeks:
First is a claim that about the TV contracts - the owners will receive broadcast rights fees, even with no games played in 2011 - basically stating this violates their agreement to share revenue.
And second is a claim of collusion, essentially stating that the owners are conspiring to set contract amounts, and restrict free-agency.
Said the commish: "It's more litigation. I've said before: This is not going to get resolved through litigation. It will get resolved through negotiation. It's time to get to the table and negotiate."
Both cases will be heard by a special master at a future date....you can't read too much into what's happened here, because neither suit was unexpected, and its all a part of balancing the power between the owners and players. But what you can infer is that this process will not be easy, and won't go away quietly.