Anybody know why OSX needs to be rebooted during certain patches? Why, technically does Apple chose to do this? Is it because of the crappy filesystem that never is consistent? (run diskutil every week and find out how many faults the file system creates. Apple need to change filesystem. I am angry about they abandoning ZFS that is by far the best filesystem there is) Windows needs to be reboot since they play with registry + the OS lock files. Unix machines does not have registry and the OS can access all files. Solaris and other Unix OSes never needs to reboot, even after heavy patching.