Agreed. Netmarketshare's figures for all operating systems vary in unbelievable ways ... and April's 9.56% looks like one of those unbelievable variations. (The Mac share went up 2 points for no discernible reason, then came down 2 points over the next three months.)

It's not too far-fetched to believe that the Mac's share used to be roughly 7-8% and is now roughly 6-7%, which is as much as I'd take from Netmarketshare numbers.

However, that would be against the historic trend of the Mac's increasing market share, and I don't see any evidence for it in the marketplace. The people who were waiting for new Macs didn't stop using their old Macs.