Originally Posted by rickblackdog
I use mountain lion in my studio. It's robust and fast. Perhaps users are expecting a windows type experience, where the new operating system is slower? That's not been my experience with apple software. Mountain lion seems faster than lion, mavericks will be even faster.
I find Windows 8 more responsive than Windows 7, Windows 7 than Windows Vista. Windows XP of course is the exception here, stick it on a modern computer and it is fast but half your hardware is unsupported!
I also work in IT as a professional developer (including RE)