OS-X 10.9.2

Update.-- I spoke too soon. The hid-deny control still crashes some apps, like Twitter, and some have problems working. I suspect updates to those apps will be released soon.

Original Post.--Well, almost, but not there Apple. But then probably much of what was updated doesn't concern me or I don't use anyway, eg. Google mail, etc. My concern was control of the menu bar arrangement which they broke among other things. That said, here's a few notes.

First, walk through your notifications, Cloud account and other settings in the preference panel. The installation changed them, adding notes and reminders to iCloud for me which I don't use, but to change them it may delete them off your Mac.

Apple is pushing people to the iCloud by hook or by crook, meaning setting the iCloud to the default and if you change it, they pop up a box it will delete all those things, notes, reminders, etc., on your Mac, and it will.

To Apple on this I can only say what can't be said but is often heard on the street when someone pisses you off and you reply with short, precise language. Yeah, it sucks on Apple to continue to pull this stunt.

As for the Menu Bar control, it's better but still not what was the normal mode in OS-X 10.8 Mountain Lion. Most of the icons will line up on the far left after that last one in the order you open them, but some won't and will take 2 or 3 times to close and open before it will line up last on the left.

With that I'll settle for it now but expect better with OS-X 10.9.3 to return to what was in 10.8, simple and easy operation and control of the icons on the menu bar. You can get one of the third party apps, Bar Tender and Menubar Rearranger, but with a little time you can get the icons in the order you want now.

They also appear to have solved the deny hid error message and problems with the menu bar apps which use drop down menus or open/close window on the screen. All the menu bar apps seem to work as expected now.

Don't forget after the installation to run the purge command after you reboot. The installation and reboot uses about 4 GB of the file cache which isn't reclaimed until tomorrow morning if ever, so it helps to reset the cache file memory.

You can use Google for the instructions or it's really simple. Open a terminal window, see the app in the utilities folder. Type: purge . You'll be asked for the administrator password, which is your password if you have administrator privileges, enter it, and wait about a minute.

You can check the before and after with the Activity Monitor window, another app in the utilities folder. Watch the "File Cache" value. Before will be in GB's and after in MB's. This value will rise during the day to 1.5-2 GB as you use apps, and more if you use a lot of apps.

You can always use the command when it get too high but make sure the backup isn't running. It won't break the backup, just keep more memory in use for the backup in progress. There's a cool backup monitor widet to monitor the backup.

That's some initial impressions and opinions. It's better and I hope Apple continues down the road to fix problems, you know the real ones than the bells and whistles, or add new problems in old applications, but then with Apple anymore, I don't hold my breath anymore.

Good luck with your update. As with all things Apple and in life, your mileage may vary.