I use AirPlay, external monitors and projectors all the time. No problems here.
As we have to remind ourselves at work, hundreds of thousands of happy customers don't complain, but the hundred who do (quite rightly) are very loud.
In fact, to the contrary, it seems to have finally fixed my issue where Mail would randomly stop fetching new messages from Gmail until restarted. At least I haven't seen the symptoms of that in a while.
It going to take me months/years to trust Mail again. Such a horrible bug for them to release with.
My Air has had some weird won't-wake-up issues from time to time since 10.9.3 came out. Maybe its a laptop thing?
I honestly haven't seen a kernel panic in years though on any of my computers though. The last time I did it was because I had a slew of bad sectors on my HDD.
What I also realized was constantly upgrading from one version to another kept around some legacy files that messed up my OS a bit. A clean install might do the trick for those having issues.
Why is such a solution even acceptable? I had no issues before 10.9.3, but if I have to go through a clean install just to fix the issues, there's no way that Apple is going to keep me as their customer.
And you would rather that your $4000 machine kept crashing rather then spending 30 minutes doing something that could fix it?
I switched from Lenovo (which just worked without any problems) to Mac because I thought it's the same quality (it'll just work) with the bonus of allowing me to develop for iOS.
As it turns out, superficial things like the look and feel is better on the Mac, but it's nowhere near in terms of stability. I used my Lenovo for 3 years in work and at home as my only machine, whereas the Mac is in use for 1 day per week and I've already had more crashes on the Mac than I ever had on my old Lenovo.
I just don't have the time or the interest to babysit my laptop.
In fact, it seems to have finally fixed the sleep wake failures I was occasionally having on the Macbook Air since Mavericks came out.
I've had more issues with hardware reliability with Apple products than with software issues.
EDIT: ok, may be 16 panics of the same bug.
Not since Windows 98 have I seen such an unstable OS. I've seen less BSOD in the last 15 years than I've seen kernel panics in the last week.
But now, 10.9.x is a piece of shit. It hardlocks all the time (2-3 times a week), seemingly around external displays. I'm really feeling burned at this point. These 6-7 locks in the past 3 weeks since I got a new laptop are probably 50% of my macos crashes since 2007. It's really really disappointing, and is making me question why the hell I pay this much money for a laptop. Apple needs to pull their thumb out of their ass and fix their fucking os.
This  seems to have helped a little bit, but seriously, fuck apple. I'm hunting for a way to downgrade my laptop to 10.8
Edit: to be clear, the really appalling bit here is how frequently these locks occur. This isn't a subtle bug; it's a symptom of apple being asshole cowboys. Given the frequency of these crashes, I believe it's impossible they used their laptop with an external monitor at all or their devs would have hit these too.
I had to unplug and just stick with the retina display to get anything done.
Let's call it like it is: 10.9 needs some fixing. Plugging in an external monitor shouldn't be a big thing. I shouldn't have to tread on egg shells as far as what I do with such an expensive piece of equipment.
I actually lag 4-6 months behind releases now on both my macbook and my iphone. While I used to love being an early adopter and downloading the latest release the night it came out. Over the past few years I've had so many stability issues that I can't afford the annoyance, frustrations, and hit to productivity. It definitely seems that the quality of apple os's out of the gate have more problems then they did in the past.
Anecdotal information is not particularly helpful but I have had almost zero 10.9.x kernel panic problems on any of our 11 machines except for one that had bad RAM and another that the hard drive was dying.
Is there virtualization software that is not unstable on OS X?
Some of the only kernel panics I have ever had we I think to do with VirtualBox's kernel module. VMWare feels faster too.
The only thing that bothers me is that, for some reason, all three have some difficulty reconnecting with the wifi after they wake up - they take more than 20 seconds to reconnect while the Linux laptops do it in less than 5.
Also, I would say I've had relatively zero problems in recent years. Every now and again there will be a weird freeze, but so infrequently (i.e., a few times per year at most) that I don't blame the OS for it because I don't have any useful info.
I used to have a problem (twice) of extreme slowness in networking, but a reboot fixed the problem.
And if it crashes for certain people chronically, then there's a syndrome that's reproducible. Meaning it is likely to affect a lot of people in similar circumstances.
The question is whether you can go from "2 or 3 friends of mine said they have more crashes than before" to "10.9.3 is more prone to crashing than 10.9.2." For all we know, the entire sample is using some 3rd party utility that crashes under the new update, which is bad, but is also not something you can completely blame Apple for.
This makes a lot of sense. IIRC, he's in the business of developing OSs and core OS-level technology. All he doesn't need is to agree with some silly terms and have Apple's legal on his back.
The safety of such agreements depend entirely on your line of work.
i think in his shoes i'd rather spend time debugging than peering over a somewhat self imposed roadblock.
Ask yourself this: If I post a piece of software on the internet, and on page 57 of the 132 page license agreement there is a provision that says you have to pay me $150,000 every time there is a lunar eclipse, what do you think as a policy matter that a court should do when there is a lunar eclipse and I file a lawsuit for non-payment in breach of contract against a million people who have used my app? Order them all to pay me $150,000 each? If so I think I have a new business model.
Attaching license terms to the use of software is problematic. When the terms are minor and unobjectionable then they're meaningless, because pretty much nobody is going to go through the trouble of litigation over the matter of someone lying about their age on a dating website, and what would be the remedy in that case anyway? Any terms significant enough to be worth enforcing in court are almost certain to be shocking or unreasonable, like requirements to pay money under unexpected circumstances or attempts to limit the rights the user has under copyright law.
More than that, we all know that 99% of users never read the damn things, and they never will. How can it be reasonable to enforce terms against someone who everybody admits never understood the terms?
By the way, what happens on my machine is that the UI completely freezes. I'm not sure if that's what other commenters experience when they talk about "crashing".
No crashes or kernel panics since then, but I agree that switching graphics modes seems to cause most of my crashes. I get the "rainbow crash" where the UI freezes and garbage appears in stripes and blocks on the screen. I can still ssh into my MacBook and reboot it (or even restart the UI, I think).
Before the update I never had any issues.
I love the hardware and the OS a lot, but I never had any crashes with my ugly Lenovo, so I'm currently thinking about switching back to Lenovo
I don't get the WiFi disconnects, but 10.9.3 has stopped being able to automatically connect to WiFi.
Wake up Macbook from sleep and find WiFi disconnected. Click icon, see only a couple of SSIDs, click the one I want, get the "unable to connect dialog". Click icon again and wait for refresh; now see a much longer list of SSIDs. Click the same one that it couldn't connect to before and it finally connects.
EDIT: This is on 10.9.2.
On the other hand I experienced random WiFi problems upon wakeup, had to do a couple of hard-reboots, suffered the rainbow static problem and other miscellaneous problems with external displays. Lately I've been experiencing some weird issues with the sound system: I hear music in my headphones but some notification sounds are sent to the speakers.
As a first-time Mac user (after a decade with Linux) I must say this is quite a frustrating and "meh" experience.
Love the screen and the battery life though.
Glad to hear I'm not alone, my colleagues rolls eyes when I rant about the problems I'm having.
Side Note: It seems to me that the most problematic models are Retina MacBook Pros.
The only Windows BSOD I've seen since Win7 came out has been from a dodgy stick of RAM. A stick of RAM that then got passed around a few of us at work to ensure timely laptop upgrades.
I also hadn't thought to blame the update for this until now (as I just have lost all faith in this particular model) but the timeline matches up well.
Edit: after re-reading, I think I know what you're referring to about the random static on the external display, which I've experienced over HDMI and Apple hasn't been able to debug (support case open for more than a few months now).
So, problems with the iPad Air are not particularly surprising. The shift to a 64 bit OS is a difficult thing to get perfect on a first go.
That said, they really should have nailed the discrete GPU kernel panics on rMBPs by now. That's been going in fir a couple of revs of the hardware and is unusual.
Also, Mavericks broke Samba support completely. Apparently 10.9.3 doesn't fix it.
I agree with the comments about this being the least stable Mac OS ever. I'd put it up there with Windows ME. Multiple times per day I have to interrupt what I'm doing to deal with Apple-related bugs.
I bought a new MBP a few weeks back, and the hardware is awesome... the retina screen, 16GB RAM and 1TB SSD make it a joy to use.
* I enabled Bluetooth, plugged in my Magic Mouse, and the next time it woke from sleep wireless connectivity had disappeared and has only come back sporadically since
* the machine occasionally 'loses' USB drives, complaining that I didn't eject them properly when they're still connected
* plugging in my Nexus phone via USB, or an HDMI cable, sometimes causes the keyboard to freeze, needing a hard reboot.
Rebooting twice within an hour isn't welcome when you're giving a lecture and have already met the student who loudly proclaims that Apple hardware is overpriced crap.
I do wonder whether Apple actually test new releases of their OS, or just leave it to us to do it for them.
And don't get me started about the usefulness of the "Genuis" Bar at my local Apple store...
I am wondering whether a downgrade to Mountain Lion may fix a few problems.
Your USB and HDMI issues seem related. I'd wager a power issue.
Make the problem reproducible and they'll swap it over at the Genius Bar, who are extremely helpful if you're polite to them.
FWIW, I've had that issue several times and it's always turned out to be a hard drive which is on the verge of failing.
Started when I connected my 22'' Dell over DP instead of HDMI with Apple-supplied DVI adapter, and added a second display – an Apple Cinema 20'' flipped to the side, to use it in vertical orientation.
I didn't wait for 10.9.3 to put that away. I just couldn't stand the way it would blank out the screens with a random color somewhere off my desktop; and hang – several times a day at times. Might have something to do with how crap our power line is (I've seen ceiling lights changing intensity throughout the day when this was happening).
Would be fun to check now with 10.9.3, my past experience tells me that the most whined about builds of OS X have worked out to be the most stable for me personally.
It also tends to happen a lot during web browsing more than anything else, I don't have any VMs, any external monitors, or any fucking-with-kernel things.
Ironically, it's been only 2 years since I started using OSX from Windows and Linux, and basically the amount my computers crashed hasn't changed a bit. I wondered why Apply fanboys kept raving about how crash-free their life was, since I wasn't seeing it.
I guess this is just what happens when an OS evolves to become an open enough platform for a lot of software to run on it, it just gets less stable.
Also I recently installed refind (http://www.rodsbooks.com/refind/) to dual-boot linux and have experienced a lot of issues as a result of that (separate to the aforementioned freezing issues.)
At least this guy has actual kernel panics :)
I have two 1920x1080 external monitors (hdmi and thunderbolt) which seems to be a commonly reported configuration with crashes.
It came with Mavericks and has done this ever since I got it, under all versions of Mavericks
Sometimes when I hook up my external displays, some of the icons on one of the menu bars will disappear. It's very strange. I can fix it by going into the display settings and changing which one is primary.
I've got a recent rMBP with 2 x 1920x1200 monitors attached, one via a MiniDP -> DVI adapter, the other via as MiniDP -> Dual Link DVI adapter.
Current uptime: 23:05 up 3 days, 8:36, 2 users, load averages: 1.67 1.56 1.67
Although - one port on the graphicscard won't wake up if a connected screen goes to sleep. Nvidia had that problem on the first released 10.9.2 driver, but fixed it about a day later.
Could you try checking if the Nvidia supplied drivers helps?
After a ton of messing around and talking to Apple Support, we found that trashing the WindowServer plists that are stored in multiple locations seemed to sort it out… so far
Sounds a lot like the problem is graphics switching - everyone with issues here has two graphics adapters.
Sadly, I am sort of forced to use it everyday.
The hardware simply shouldn't get that hot, no matter how poorly optimized the software might be.
This would probably have fixed his problem since the backtrace he finally Obtained fingered the file system, which is probably corrupt. (not that this excuses the panic!)
This is further evidenced by his "helpdesk" being unable to repair his computer by physically swapping drives.
I also still disable noatime, journaling, swap space, and sudden motion sensors on any computer with an SSD; even if its unnecessary.
This guy is a bafoon complaining about being unable to fix a problem by not accepting T&C, but he's using OS X?
I'm not denying his problem, but he is certainly cause for it being a lot worse for him than it really is.