Windows 7's market share climbed almost 40% in the week following its release, according to research outfit Net Applications. During the week after October 22, market share of Microsoft's latest operating system jumped more than 39% from 1.91% to an average of 2.66%. That growth doesn’t appear to be slowing either, rising another 82% to a peak share of 3.48% on October 31. For the entire month, Windows 7 finished with a market share of 2.15%, a 41% increase over the 1.52% for September.

Overall, Windows' share fell by .23% globally to 92.52%, while Apple's Mac OS X consumed the majority of that loss, gaining .15% and finishing the month at 5.27% -- its highest share ever. Windows XP experienced a .92% loss during October, falling to 70.6%. Meanwhile, Vista rebounded from September, when its share dropped for the first time in over two years, ending the month with 18.77% -- still less than its August record of 18.8%.