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Even opening 'about this mac' gets a spinning beach ball.
The performance is simply pathetic
 
From the moment I installed Yosemite, my wifi/Internet all but came to a grinding halt. It felt like being back in the days of dialup modems (when it was working at all). I see many others suffering the same fate on the Apple forums. Thankfully I have some respite today. I'm not sure why, but I won't be touching my settings while it's working! Hoping a 10.1 release comes soon.
 
I have a 2011 21 inch iMac with 8gb ram and a 2014 macbook air 13 inch with 4gb ram. My iMac came with lion which was probably the smoothest os i have ever run - don't remember a single crash. However as I upgraded to mountain lion , maverick and now yosemite the system is clearly more unstable and crashes have become more frequent. I love the iCloud drive, sms relay and continuity features of yosemite and don't want to go back but I find that apples OS is definitely more buggy as they go to yearly releases. My iMac with 8gb quad core is more laggy than my 4gb macbook air . Preview in particular seems to crash frequently requiring system reboots. I think for OS X apple should focus on the user experience and stability for the next few years instead of rushing out newer versions every year. I know that I can do a clean install but thats not the point. The point is apples OS updates should run smoothly without having to do a clean install everytime!! Having said that , my iphone 4 when it came with iOS 4 was much more stable than my iphone 6 plus with iOS 8.1
 
I have a 2011 21 inch iMac with 8gb ram and a 2014 macbook air 13 inch with 4gb ram. My iMac came with lion which was probably the smoothest os i have ever run - don't remember a single crash. However as I upgraded to mountain lion , maverick and now yosemite the system is clearly more unstable and crashes have become more frequent. I love the iCloud drive, sms relay and continuity features of yosemite and don't want to go back but I find that apples OS is definitely more buggy as they go to yearly releases. My iMac with 8gb quad core is more laggy than my 4gb macbook air . Preview in particular seems to crash frequently requiring system reboots. I think for OS X apple should focus on the user experience and stability for the next few years instead of rushing out newer versions every year. I know that I can do a clean install but thats not the point. The point is apples OS updates should run smoothly without having to do a clean install everytime!! Having said that , my iphone 4 when it came with iOS 4 was much more stable than my iphone 6 plus with iOS 8.1

I think the hard drive is the biggest determining factor with Yosemite. My Mini with the 5200rpm hard drive and 8Gb RAM is a slug, whereas my sister's Macbook Air with a SSD drive and 4Gb RAM is much faster.
Next Mini I buy (not the current model) will have a SSD Drive for sure
 
I keep getting logged out randomly in the middle of doing something. It's quite annoying. Pretty sure I'm not the only one who has this...
 
I have a 2011 MBP 17" and had continual issues with Mavericks. I installed Yosemite and it now runs like a brand new machine. I'm actually stunned how well it runs the OS. I figured it would get worse and had constant wifi issues with Mavericks, NONE on Yosemite.

It's strange how performance of this OS varies. I've seen people with much newer machines that have issues with it. I was about to buy a new MBP but now am totally happy with this one thanks to Yosemite.

You just never know...
 
Memory clean? Why are you doing that? You do know that since Mavericks the OS tries to grab all the memory it can, quite deliberately? Any unused RAM you have is wasted RAM, so the OS doesn't waste it.

Do yourself a favour: Turn off memory clean, and keep an eye on Memory Pressure in the Activity Monitor instead. If your memory isn't under pressure, you don't have a RAM issue. Interfering with the way that the OS handles memory (e.g memory clean) might itself be an issue.

There are plenty of background processes running - especially right after an OS upgrade - that require memory, not just a couple of open apps you might see on a desktop.

Not to criticse or insult the OP but you got to love the complainers that do stupid stuff like this and wonder why their Mac runs like crap. I bet half the posters on this forum do precisely this and than say stuff like Mavericks sucks or Yosemite is slow. Memory clean on OS X, might as well get Mac keeper wtf. This ain't windows, stop trying to do maintenance through crap apps. The only maintainance OS X needs is clearing the Internet browser cache, LOL.
 
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Nope, I´m quite liking 10.10 Yosemite and except for a few known bugs I have no issues (clean install). But I was coming from 10.7. Lion and this was quite a jump for me, a lot of new stuff. Except for booting the OS where Lion was definately faster, 10.10 is a LOT faster and smoother than Lion ever was for me. I am also liking the design and I believe after a few updates to eliminate the bugs - we have a really cool OS. Continuity alone is absolutely awesome and works great on my officially not (fully) supported 2011 Air and iOS8 devices.
 
Had mail issues since install, along with Ethernet and wifi drops. I spent a good month trying to correct to no avail.

Yesterday I went back to Mavericks and all is well again, I can work now without struggling to make the machine function as it should.

2013 mba maxed out.
 
I love yosemite. I love the flat look! If anything, I prefer it over mavericks. :D
 
Ive has way too much power at Apple. I don't think Jobs would have let him touch OSX.
Why is this guy doing software? Judging by how hideous Yosemite is, he never should have been let anywhere near it.
Safari looks ridiculous, like a third grader designed it.
His obsession with thinness at the expense of functionality is so annoying I wish Apple would just get rid of him already.

Fortunately, noone's job at Apple depends on you liking them.
 
Judging by this thread, I must be in the minority. Yosemite installed easily on my middle aged iMac and MacBook, no problems, they play well with my iPhone and iPad, and I like the look. Unlike the OP I don't run third party cleaner utilities.
 
If you are happy with Yosemite or not depends on what you do:

e.g.: I don't have mail problems because I use Thunderbird,

but I suffer from name changes in the applications:

e.g.: "DigitalColor Meter.app" became "Digital Color Meter.app" so a link broke,

e.g.: /etc/launchd-user.conf is no longer supported so I can not specify
my own umask value.

So, some people are content, some are not; some complain about this,
others about that.
;JOOP!
 
Usability or GTFO: a Yosemite inspired app on Mavericks

Fortunately, noone's job at Apple depends on (steve333) liking them.

Irishman, on one hand I disapprove of the attempt to denigrate a fellow writer's opinion. On the other, I probably share the fondness with which you recall BeOS. You'll probably have a field day with this, in the Mavericks area a week ago:

https://forums.macrumors.com/showthread.php?p=20279855#post20279855

Pot, kettle, black – there's me attempting to publicly denigrate someone. Someone who is, as far as we know, not present in the forum. It was debatably cowardly of me, and I do have moments of regret (he's only human, it can't be nice to read such things), but I gave it much thought and decided to leave the post, unedited, as an example of the uncharacteristic anger and negativity that can be caused by an uncharacteristically, unacceptably poor operating system – and more – from a producer that was previously respected for its levels of excellence.
 
As a huge Mac fan i'm still in disbelief at this release.

My first computer was a Windows Millenium Edition PC - then I quickly moved to Mac with an iBook.

Yosemite is worse than Windows ME - and that really is saying something.

The little bug where you click on something - but it doesn't register the click. . .so you click again is EXTREMELY frustrating. Especially if you are working fast and going in between applications etc. Click on the trackpad and start typing only to release Mac ignored your click and you've to redo it all. Click on something and wait for a page to load. After a few seconds you realise the page isn't loading AT ALL because Mac ignored your clicks. Small things like that really lack the Appl polish and attention to detail.

Apps open slower and genuinely feel buggier and more clunky.

The Mac doesn't completely boot up before allowing you to log in. . .if just boots the log in screen and then you've to enter the password and then wait for boot. Before you could push the power button, go and do your own stuff, then log in when you were ready. Now you push the power button , go do your own stuff, come back. . .log in. . .and wait for it to boot (then a further 15 minutes after you've bottled up before the OS becomes responsive and actually bothers working).

This OS bring back nightmares of the experience I had on Windows all those years ago.

The positives are that it looks kind of nice. (if I ignore the fact the spotlight now works in the middle of the screen for no reason at all. Click on the top right, and not having it all happen up there just doesn't make cosmetic sense).
 
The Mac doesn't completely boot up before allowing you to log in. . .if just boots the log in screen and then you've to enter the password and then wait for boot. Before you could...

That was always the case if you have FileVault turned on.

You probably turned it on without realising it.

With FileVault turned on, your Mac HD is encrypted. Only your password can decrypt the data.
Which means only after you login, the boot up and decryption processes starts.

Also see: http://www.cumc.columbia.edu/it/howto/encrypt/fv2.html
 
Treat it like a new extended beta test program; it comes out 12 months early, they work on it on a regular basis and, when its finally knocked into shape and is as stable as its ever likely to get, they call it 10.10.5 mark it as done and move onto 10.11.0

That's when you upgrade from 10.9.5 :)

You run that 10.10.5 for a year (free from need for regular boring downloads of point updates and any of the hassles other folks are getting) and then repeat the process with 10.11.5

You still get a new OSX on your machine every year; the only difference is you get a stable one with all the bugs shaken out, and that all your software has finally got round to fully supporting

Easy :D

That actually makes some sense...
 
I definitely see the spinning wheel a lot more with Yosemite....A LOT more.

Aside from that I haven't noticed any other issues.
 
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