buckworks - 8:06 pm on Dec 7, 2011 (gmt 0)

From seoskunk's link:

As for Cox, Johnson says that even if the court had ruled that she didn't have to reveal her source, she likely still would have had to reveal the source if she wanted to prove her statements were true and therefore weren't defamatory. In other words, the shield law, even if applied, might not have shielded Cox from the $2.5 million judgement she's been ordered to hand over.