Apple today issued build 12E40 of OS X Mountain Lion to developers, a week after build 12E36 was released. Build 12E40 marks the fifth beta iteration of OS X 10.8.4.

12e40
Apple continues to ask developers to focus on Wi-Fi, Graphics Drivers, and Safari.

The update is available through the software update tool in the Mac App Store and Apple's Developer Page.

Top Rated Comments

coder12 Avatar
156 months ago
What if 10.3 was just a placebo. I mean, 10.3 and 10.4 have exactly the same 'focus', wifi, safari, graphics.

Maybe 10.4 was supposed to be 10.3, but they were taking forever with 10.3 so they decided to actually release half baked thing.

10.3 & 10.4? Panther and Tiger? ;)
Score: 9 Votes (Like | Disagree)
TheGreenBastard Avatar
156 months ago
Where do I get one of these magic seeds?

Pay $100. You get all the magic seeds.
Score: 9 Votes (Like | Disagree)
Michael Goff Avatar
156 months ago
What if 10.3 was just a placebo. I mean, 10.3 and 10.4 have exactly the same 'focus', wifi, safari, graphics.

Maybe 10.4 was supposed to be 10.3, but they were taking forever with 10.3 so they decided to actually release half baked thing.

It seems like it's a bit late to be complaining about Panther and Tiger if you ask me.
Score: 8 Votes (Like | Disagree)
JohnDoe98 Avatar
156 months ago
You are funny. You really are. Tell me why, exactly, is it a "problem" for computers to take as long as they need to in order to shutdown properly? You have intimate knowledge, I suppose, as to what the shutdown code is doing in the operating system. Well, do you?

Why does Apple kill the processes at 20 seconds rather than let them "take as long as they need in order to shutdown properly"? Here's a hint, because if a process or app has hung, it might never shut down properly without the OS force quitting it. Apple figures 20 seconds is a reasonable time to wait for a response before killing it.

Now, if your console log shows that every single time you shutdown certain tasks are crashing and requiring them to be killed, then waiting 19 extra seconds is useless since the records show they will not respond within the given time interval anyway.

I'm all for letting systems take as long as they need to shut down properly, and that is exactly why I'd like Apple to fix things so when I open up my console there are no error logs. Then we wouldn't have cause to complain about slow shutdowns because the system is doing whatever it is supposed to do. But when there are error logs pointing to specific tasks that are not shutting down properly, and the slow response has been shown to be caused by those specific tasks, you can't tell me there isn't something wrong with them and that everything is normal. Error logs are not "normal" behavior, they are there to help diagnose a problem.
Score: 6 Votes (Like | Disagree)
Krazy Bill Avatar
156 months ago
If you use Google you will probably find guidance that you can use to go through the system events that take place during shutdown.
Another newbie to the shut down "bug". Take your own advice and search the MR threads about it.

If you raised a help call with Apple, they would probably ask you to provide the event log.
We've been doing this for months. :eek:
Score: 6 Votes (Like | Disagree)
milo Avatar
156 months ago
No, I don't believe anyone has suggested that. What has been suggested is that it is a 'universal' problem. Which it clearly isn't.

OK, you win. "Universal" means it happens on 100% of machines, which may not be the case. It's probably not literally "universal", more like extremely widespread. Still definitely a problem with the OS and not user specific though.


Yes the slow shut down does occur but there is a reason for that - it isn't a bug, it is operating as it was designed.

People have actually tracked what the system is doing during shutdown, and things are just hanging and the system gives them time to end before finally killing them off. Nothing useful is happening during that time, it most certainly is a bug. And by your logic, when 10.6 shuts down dramatically faster, are you saying there's something wrong with that? Or somehow both a 4 second and a 20 second shutdown are both "as designed" even though there's no advantage to the slower one?

Read the post from johndoe above.


Once upon a time, a man put some toast in his toaster. It took a minute to do its thing. And it provided lovely nice crunchy toast.

But then all of a sudden it took two minutes to make toast with the exact same result. And the man was a toaster sycophant and insisted that that was how it was designed to work. The end.

Fixed that for you.
Score: 5 Votes (Like | Disagree)

Popular Stories

iOS 19 Mock WWDC25 Feature

iOS 19 Expected to Run on These iPhones

Monday March 31, 2025 5:28 pm PDT by
iOS 19 will not be available on the iPhone XR, iPhone XS, or the iPhone XS Max, according a private account on social media site X that has accurately provided information on device compatibility in the past. The iPhone XR, iPhone XS, and iPhone XS Max all have an A12 Bionic chip, so it looks like iOS 19 will discontinue support for that chip. All other iPhones that run iOS 18 are expected...
maxresdefault

Apple Releases iOS 18.4 With Priority Notifications, Ambient Music, New Emoji and More

Monday March 31, 2025 10:03 am PDT by
Apple today released iOS 18.4 and iPadOS 18.4, the fourth major updates to the iOS 18 and iPadOS 18 operating system updates that came out last year. iOS 18.4 and iPadOS 18.4 come two months after Apple released iOS 18.3 and iPadOS 18.3. Subscribe to the MacRumors YouTube channel for more videos. The new software can be downloaded on eligible iPhones and iPads over-the-air by going to...
watchOS 11 Thumb 2 1

Apple Releases watchOS 11.4 With Sleep Alarm Update

Tuesday April 1, 2025 10:34 am PDT by
Apple today released watchOS 11.4, the fourth major update to the operating system that runs on the Apple Watch. watchOS 11.4 is compatible with the Apple Watch Series 6 and later, all Apple Watch Ultra models, and the Apple Watch SE 2. watchOS 11.4 can be downloaded on a connected iPhone by opening up the Apple Watch app and going to General > Software Update. To install the new software,...
AirPods Pro Firmware Feature

Apple Releases New Firmware for AirPods Pro 2 and AirPods 4

Monday March 31, 2025 11:27 am PDT by
Apple today released new firmware updates for all AirPods 4 and AirPods Pro 2 models. The new firmware is version 7E93, up from the 7B21 firmware that was installed on the AirPods Pro 2 and the 7B20 firmware available on the AirPods 4 and AirPods 4 with ANC. It is not immediately clear what new features or changes are included in the new firmware, but we'll update this article should we find ...
macOS Sequoia Feature

Apple Releases macOS Sequoia 15.4 With Mail Categorization and More

Monday March 31, 2025 10:04 am PDT by
Apple today released macOS Sequoia 15.4, the fourth major update to the macOS Sequoia operating system that launched in September. macOS Sequoia 15.4 comes two months after the launch of macOS Sequoia 15.3. Mac users can download the ‌‌macOS Sequoia‌‌ update through the Software Update section of System Settings. It is available for free on all Macs able to run macOS 15. With...
iPhone 17 Pro 34ths Perspective

iPhone 17 Pro Launching Later This Year With These 10 New Features

Sunday March 23, 2025 10:00 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. Below, we recap key changes rumored for the iPhone 17 Pro models as of March 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone ...
Apple Card iPhone 16 Pro Feature

Visa and American Express Vying to Win Apple Card Deal in 'Fierce' Fight

Tuesday April 1, 2025 1:50 pm PDT by
Visa wants to pay Apple approximately $100 million to be the new payment network for the Apple Card, reports The Wall Street Journal. As of right now, the Apple Card is on the Mastercard payment network, but that is set to change because Apple is ending its partnership with Goldman Sachs. Both American Express and Visa are vying to replace Mastercard as Apple's card services provider, while...