Gilbert Arenas just released a statement to the press:

“I feel very badly that my actions have caused the NBA to suspend me, but I understand why the league took this action. I put the NBA in a negative light and let down my teammates and our fans.  I am very sorry for doing that.

While I never intended any harm or disrespect to the NBA or anyone else, my gun possession at the Verizon Center and my attempts at humor showed terrible judgment.  I take full responsibility for my conduct.

Earlier today, I called Commissioner Stern to apologize, and I hope we will be able to talk soon. I look forward to the day I can return to basketball.  In the meantime, I will focus on dealing responsibly with this serious situation and I will continue to cooperate fully with the investigations by law enforcement and NBA authorities.”

This sounds sincere to me.