As I understand it, in order for there to be a violation of the statue, Ms. Plame would have had to have been a covert agent within five years of the leak or served overseas within the last five years. I don't believe she was a covert agent by this definition.
She apparently was brought back to the US in 1994. So, she was pretty far removed from the five year window because the questionable Rove interview took place in 2003. From that time, she apparently had a desk job at Langley.
The reason some of us aren't worried about the leak is because we don't believe a leak about a covert agent actually occurred.
Also, I would like to go on the record as saying that if anyone leaks the identity of a covert agent during a time of war, the leaker should be pursued to the fullest extent of the law, Republican, Democrat of any one else.