Support
Lots of machines can't be updated past Lion (first release with iCloud and all of those processes) but I can't understand the huge number of mountain Lion.
I thought that it would be 30% 10.6 (compatibility with PPC apps, can't update their machines, do not want Lion) and 70% on Mavericks (better than 10.8 and 10.7 on every single way).
Those 18% 10.8 users and a few of those Lion users should be on Mavericks. I hope they update soon so we all can benefit from better, 10.9 ready, apps.
Due to how people manage their computers (less upgrades, less software updates) wouldn't it be better if Apple polished more the OS and released a new version every 2 years? My machine is faster than when I bought it (2011), but Mavericks still could be faster and there are some bugs.