Aside from the irritatingly slow shutdown, Mountain Lion 10.8.3 isn't giving me any problems - probably because I use fairly standard apps and hardware setup.
The only thing that would now make me upgrade to 8.4 is if Apple reduces shutdown time, otherwise, I'll just wait till they tidy everything up in the last update, perhaps 10.8.5
I feel aggrieved that, with new OS's coming out every year, that the previous OS never get to the level of rock solid performance that comes with a few iterations, such as 10.6.8 and 10.5.8 and 10.4.11
And all this updating of new OS's, FOR WHAT, APPLE!!!! If you look at the survey below,
http://www.macworld.com/article/204...the-most-and-those-you-dont-love-at-all-.html
the poll shows that most people, including myself, hardly use any of the stupid new features. Yet, the price I've had to pay for these new OS's are upgrades to several software. The one that gets me irritated the most is that when ML came out, it wrecked my 4.10 VMWare setup, so I upgraded to VMWare 5.0, but the old VM data file didn't work under the 5.0 upgrade, so I had to reinstall the entire Microsoft Windows environment. And many of the old software I used in the XP environment weren't available, so I had to buy Windows 7. All this nonsense because Apple brought out Mountain Lion with silly main features that most people don't use.
Even with Messenger, why can't Apple just bring out an App? Why must they integrate it with the OS, so we are forced to upgrade? e.g. Skype messaging works great as an App that works cross-platform etc.
Furthermore, with these useless upgrades, my older iMac can't use Mountain Lion.
And Apple links its Mail program to the OS, so I cannot upgrade Mail in my older Macs (two of them). Why can't Apple create a standalone Mail app that is sold in the App Store, like Aperture or Final Cut Pro? I hardly use any of the ML-introduced features. I need to keep my IMAP in a very basic configuration so it doesn't go crazy. IMAP can be very temperamental, so I don't use these fancy smart boxes etc. Of course we know why - by integrating Mail into the OS, it forces us to buy new hardware when our old hardware can't run the latest OS with totally useless features that most people don't use.
You and I know we are all complicit in a game where Apple does anything to force us to buy new hardware more frequently than we really need. It's a mugs game. But, sad to say, I'm not ready to shift to Windows 8 yet. Apple is the lesser of two evils.