Sony furthers its losses, this time with a battery recall 1.8 million Apple laptops , for a total of 4.8 million batteries. At a cost from $170 to $250 million for their battery problems, I do not think a 2% loss in shares is that much. Interestingly enough, if you look at Sony's stock over the last 12 months in comparison to the NYSE, they are not doing so bad. I plotted closing stock price and trade volume for some of more notable Sony announcements over since the Rootkit problem reported on October 31, 2005. I looked at the day before, the day of, and the day after each announcement. With all the bad things going for Sony, perhaps their recent $65 million purchase of Grouper is good news. Robert Cringely thinks so . Mr. Cringely, in his "i, cringely" column talks about how Sony can use this purchase to learn how to play in the new video era. At number 8 in volume, 1% of video traffic, I think this could be another loss for Sony. How many people have even heard of Gr...