BRLawyer & Evangelion - I think this might be of interest:
http://appleinsider.com/article.php?id=2413
Market share drops - stock price drops.
Anyone who does comparisons like that based on the previous quarter, is an idiot. What they should be doing is to do the comparison on the same quarter in the previous year. As that piece of news said, Apple's market-share has gone UP, even though it has gone slightly down when compared to previous year.
It's like when Apple sells zillion iPod in the christmas-quarter, and then sells somewhat less in the next quarter (as is to be expected). Does that mean that sales of iPods are going down? No.