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
121 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
121 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
121 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
121 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
121 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
121 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

airpods pro black background

AirPods Pro 2: Five New Features and Improvements to Expect

Sunday August 14, 2022 3:28 pm PDT by
Apple's second-generation AirPods Pro are finally nearing launch, with a release expected later this year. If you are considering upgrading to the new AirPods Pro once they are released, keep reading for a list of five new features to expect. In addition to all-new features, the second-generation AirPods Pro will likely adopt some features added to the standard AirPods last year. H2 Chip ...
10th Generation iPad Render

10th-Generation iPad With Major Design Changes Reportedly in Production Ahead of September Launch

Monday August 15, 2022 8:02 pm PDT by
Apple's rumored 10th-generation iPad is currently in production and will feature "major" design changes, according to a report from Taiwanese website DigiTimes. A mockup of the potential 10th-generation iPad design by Renders By Shailesh The report did not provide any specific details about the 10th-generation iPad's new design, but rumors suggest the device will feature a larger 10.5-inch...
ios 16 lock screen feature2

Apple Seeds Sixth Betas of iOS 16 and iPadOS 16 to Developers [Update: Public Beta Available]

Monday August 15, 2022 10:04 am PDT by
Apple today seeded the sixth betas of upcoming iOS 16 and iPadOS 16 updates to developers for testing purposes, with the updates coming a week after Apple released the fifth developer betas. Registered developers can download the iOS and iPadOS 16 profiles from the Apple Developer Center, and once installed, the betas will be available over the air. iOS 16 introduces a revamped Lock...
iPhone 14 Dummies 1 Feature

Everything Rumored for Apple's September Event: iPhone 14, Apple Watch Pro and More

Friday August 12, 2022 2:34 pm PDT by
There's just about a month to go until Apple holds its annual September event focusing on new iPhone and Apple Watch models. We thought we'd take a quick look at everything that's rumored for Apple's September event to give MacRumors readers a rundown on what to expect when the first fall event rolls around. iPhone 14 The iPhone 14 can probably be described more as an "iPhone 13S" because...
apple watch se

Apple Watch SE vs. Apple Watch Series 8: New Features to Expect If You've Waited to Upgrade

Monday August 15, 2022 2:44 am PDT by
The Apple Watch SE was announced in September 2020 and has been a popular Apple Watch model for customers looking for their first smartwatch or an affordable Apple Watch. Apple Watch SE customers may be wondering, however, what's in store for them with the upcoming Apple Watch Series 8 and what new features they can expect. Continue reading to find out. Apple Watch SE vs. Apple Watch Series ...
Apple Watch Series 3 v 8 1

Apple Watch Series 3 vs. Apple Watch Series 8: 20 Major New Features and Changes for Customers Upgrading

Tuesday August 16, 2022 6:52 am PDT by
It's crazy to think about, but next month will mark five years since Apple announced the Apple Watch Series 3. Despite being a severely antiquated smartwatch, the Series 3 has remained at the bottom of Apple's lineup for $199. Suppose you're still holding on to your Apple Watch Series 3. In that case, this article will list all the major new features and changes you'll get if you decide to...
iPhone 14 Pro Lineup Feature Purple

Apple Planning to Hold iPhone 14 Event on September 7

Wednesday August 17, 2022 9:51 am PDT by
Apple is aiming to hold its first fall event on Wednesday, September 7, reports Bloomberg's Mark Gurman. The event will focus on the iPhone 14 models and the Apple Watch Series 8. The standard iPhone 14 models are expected to get few changes, but the iPhone 14 Pro models will include updated camera technology, the removal of the notch in favor of a pill-shaped and hole-punch cutout, an A16...