IMac 21.5" 2010 Running Hot with Mountain Lion

Hello All -
I have a 2010 iMac i3 with 8GB RAM that I clean installed Mountain Lion on and the thing gets hot (very hot to the touch on the outside) very fast doing ordinary tasks (email, browsing the internet using Safari or Chrome, calendar). Temperatures on the hard drive typically stay below 50C but the power supply specifically can reach 75-80C when running full screen HD video (GPU will be around 55-60C at this time as well). The fans will increase to about 1500rpm for heavy loads and then go back to around 1000-1200rpm during normal tasks. I feel like Snow Leopard did not run this hot and perhaps because of all the iCloud and Notification Center processes running behind the scenes, ML may just require far more power than SL. Honestly, I'm really considering just going back to SL all together as I don't use much of the iCloud stuff.
Has anyone else noticed their iMac's running hotter after installing ML? I realize that it will run hot for up to a week after install because of Spotlight. I installed ML the day it came out, so it's been quite a while. I would really appreciate any feedback.

http://support.apple.com/kb/HT3964?viewlocale=en_US
If you don't use iCloud, open System Preferences > iCloud and turn that off

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My late 2008 Macbook Pro is running hot with Mountain Lion

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No improvement.
As I sit here now and type, my MBP is running at 66degC and the fan is at 3000rpm.....I then use smc control to ramp the fan up to 6000rpm.....the temperature drops to around 62degC.....I then set the fanspeed to default. About 2 minutes later, the temperature increases and the fan automatically ramps up again to around 3000rpm. Ive also updated Adobe Flash.
I only have Transmission and Safari open - that's it. Nothing else.
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I am almost convinced that Apple are upgrading these new OSX in a way so that we all have to keep going out and buying new MBP's - this isn't going to happen. I will downgrade back to Lion, and then Snow Leopard, if I have to. I will get my full money's worth with this laptop, and then I might consider going back to Windows.....
Any suggestions would be appreciated.
Thanks

First step I take is to make a list of the Apps I have installed that I want in the new setup as well as any irreplaceable folder/files you do not want to lose. Pretty much everything you need is in your User folder but creating the full bootable image will create a copy of everything on your hard drive just incase. A full image with CCC or SuperDuper can also be used to get your system back to square one if things go bad. Time Machine is also a good source to recover data, but I would use one of the other programs so you'll have multiple backups I found it also works best if you use the exact same user name on the new system to prevent file permissions issues.
Read http://support.apple.com/kb/HT2980 for the important stuff. It is out dated but still applies in Lion. iCloud also makes short work out of this as well. On first boot ML asks for your Apple ID, if you are using iCloud syncing Contacts, Calendars/Reminders, Notes and Safari Bookmarks will automatically get restored. All I had to do was replace my email folders and preference files for the hard stuff. On top of that copying from the back up your Documents folder, the Music/iTunes folder is all that is needed for iTunes and Pictures/iPhoto Library restored my iPhoto pictures.
Then go out onto the net and download fresh installs for any third party apps you may use. A quick Google search will generally find any data or other files you need to recover that may be hidden in the file system. It sounds tougher than it is and once you've done it it will be much quicker and easier down the road when you have to do it again. I'm sure I missed lot of info here but check and double check that you have all the data you want back on your new setup before wiping any of your back up drives, give it a few weeks before you commit the drives to backing up your new system.

HT1338 i cannot run java with mountain lion

i cannot run java with mountain lion

@jnsmth
I see Barney-15E made suggestions regarding Chrome preferences. There's also a setting on the Mac to deal with this. Regarding the drop-down menus not seeming to scroll through (such as a list of states)--where when you place or click your cursor over the drop-down menu and it only opens to some of the options in a list, I found that you have to change the scroll bar behavior in your computer's (and not the browser's) General Preferences within your System Preferences.
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This confused me at first when my scroll bars seemed to disappear, but was an easy fix.
Hope that helps with that part of your issue.

Did macbook air mid 2009 running slow with mountain lion?

did macbook air mid 2009 running slow with mountain lion?

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http://support.apple.com/kb/HT5842
... but as you may know, Apple has not sold computers with as little as 2GB RAM for quite a while.
I suggest therefore you make sure you remove any applications that may be overtaxing your machine. Examples are browsers other than Safari, Mac cleaning products (such as Mac Keeper), or any other non-Apple app that has some startup process running (such as Outlook).

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Hello,
Does anyone know of any settings or adjustments that can be tweeked to make my machine run faster with Mountain Lion?
Thanks, Jason

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as for what brands should you consider, here are some good ones.
Sandisk Extreme - Currently the fastest one out there.
Kingston HyperX - Second fastest - this is what I have in my 13 Inch Late 2011.
Samsung 830 series - Fast and uses less battery power - this is what's installed in the Macbook Retina.
Crucial M4 - Also a fast SSD - I have the 512GB installed in my 15 inch Late 2011.
If you decide to install one of these ssd in your Macbook - let me know if you need a step by step on how to clone your drive.
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I then get presented with a popup window asking me to specify my server login: local computer.
Might anyone have any suggestions to fix this problem. I have been unsuccessful checking the SPSS support documents and just looking around the web, and my campus IT support hasn't had anything to offer.
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SPSS 20 did not work after I upgraded to Mountain Lion, but SPSS states that version 20 is not fully compatible with Mountain Lion and users should upgrade to version 21.
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I have an old IMac and I was wondering how I know if my mac can run mac osx mountain lion?

http://support.apple.com/kb/HT5444
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Running hot after mountain lion install

Hello,
I just installed Mountain Lion last night. I had no issues at all. Checked out some of the different new features and all seemed to work fine.
But this morning after I turned my MacBook Pro back on is where I noticed something odd. I was using messages and also Safari. It was working great. My baterry was at 99% when I first turned it on. After about an hour of use I noticed the battery down to 67% and that Safari was not running as quick. It's not that it was not responding just running slow. Real slow. So I turned it back off and let it sit for a half hour and started it back up. Seems to running ok now. I even have a few programs open as well as the last time.
I just wanted to post here to see if anyone else had this issue. I think it's isolated and maybe some things didn't boot enough after install. Thoughts on this from anyone is greatly appreciated. Again it is runing fine and the slowing issue does not seem to be there now.
Thank You

Yes, me too. My Activity Monitor shows Safari Web Content absolutely destroying the CPU, exceeding 100%. Slows the whole system up just browsing.
Just compared browsing a facebook album in Chrome and Safari 6. Safari crawls through it with the CPU jumping immediately to over 90% while Chrome's processes barely ever reach 20%.
Also read this which suggests Spotlight's indexing is a potential cause but on my MBP (late 2011) Spotlight isn't shown as active:
http://gigaom.com/apple/is-mountain-lion-too-hot-for-your-mac-to-handle/
and also the CPU only runs hot while on Safari. Processor-heavy XCode consistently runs fine.
Assume a Safari bug. Anyone else experiencing this?
UPDATE: Restarting Safari makes a massive difference both to the real memory and the %CPU figures.

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Welcome to Apple Communities
http://www.reedcorner.net/understanding-upgrade-nightmares/ Open Activity Monitor and check the RAM and CPU usage

Why is my macbook pro running slow with mountain lion?

After installing Mountain Lion, I find navigating, opening programs, etc. is taking more time, why is this?

Immediately after installing Mountain Lion, your system will be rebuilding the Spotlight index. This should only take a couple of hours at most. If the problem persists you can run diagnostics. I just happen to have written a little diagnostic program recently. Download EtreCheck from http://www.etresoft.com/download/EtreCheck.zip, run it, and paste the results here.
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Why my iMac doesn't work in Airplay with Mountain Lion?

I am very disappointed because I have a very powerful iMac with 8GB of RAM, a AppleTV2, and I can't use them in AirPlay.
Apple has chosen to not run Airplay on an "old" iMac for not risk a failure .. it is a shame.. they must let me try to work with it..
if not working properly, iMac may automatically disable this function

Reports on other web sites are indicating that AirPlay mirroring, presuming that's what you are referring to, requires Intel's QuickSync hardware compression, something that is not present in older Macs. If that's correct, then it's not by Apple's whim and there will be no way it will ever come to your older system. Third-party options for your system include:
AirParrot- http://airparrot.com
Reflection- http://www.reflectionapp.com
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Why is my MacBook Pro running hot after mountain lion upgrade?

The fan is on high all the time and the system is running very hot. It also consumes the battery way faster than it used to.

Thanks for your links. My MacBook fan was running constantly from switch on and the underside was getting very hot. Using your first link, I followed the Activity Monitor instructions and found that Dashboard was using '117%'. As soon as I closed it down the fan instantly slowed and after only a few seconds switched off..
Thanks again..

Is my iMac (early '07) compatible with Mountain Lion

Hi Guys
I have had a lot of conflicting answers to my question, so here goes.
Would the imac (as sepcified below) be compatible with mountain lion?
Model Name: iMac 20"
Info retrieved from "when was you mac born"
Model Number: MA589
Group1: iMac
Group2: Intel
Generation: 51
Machine Model: iMac5,1
Model introduced: 2006
Production year: 2007
Production week: 07 (February)
Other Info:
Model Identifier: iMac5,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.16 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache: 4 MB
Memory: 3 GB
Bus Speed: 667 MHz
Boot ROM Version: IM51.0090.B09
SMC Version (system): 1.9f4
Hardware UUID: 00000000-0000-1000-8000-0017F2D4501C
I really would appreciate any help and thanks in advance.
Steve

No, it's not compatible with Mountain Lion. See:
Macs that will support OS X 10.8 Mountain Lion
As usual, the newer the Mac the better:
MacBook Pro – 13″ from mid 2009 or later, 15″ from late 2007 and newer, 17″ from late 2007 and newer
MacBook Air – late 2008 and newer
iMac – models from mid 2007 and newer
MacBook – 13″ aluminum from 2008, 13″ from 2009 and newer
Mac Mini – early 2009 and newer
Mac Pro – early 2008 models and newer
XServe – early 2009 models and newer
Macs that are NOT expected to support OS X Mountain Lion
Older Macs and those with weaker GPU’s will likely be left behind:
Anything with an Intel GMA 950 or x3100 integrated graphics card
Anything with an ATI Radeon X1600
MacBook models released prior to 2008
Mac Mini released prior to 2007
iMac models released prior to 2007
Original MacBook Air

HT5268 Just purchased Imac and Macbook pro and upgrades to Mountain Lion. Java will not run with one important site where my Grandson is in Kindergarten out of state with in room camera. What to do. This is very disappointing and non of apple geniuses kno

My new IMac and Macbook Pro are each loaded with Mountain Lion. Have Office for Mac also
When I try to see my Grandson on webcam out of state the login will not activate. For PC use I needed Java and Active X to let it run. My Java is checked as ready to go but nothing happens. Otherwise these are great computers. Please help me through the process. The Geniuses at my apple store can't understand what to do.
[email protected] or [email protected]

By default, OS X does NOT come with Java installed nowadays. You need to open the Java Preferences app found in Utilities; when you do that the first time, it will inform you of the fact and offer to install the product for you.
Afterwards, due to a major security issue we had back in the first quarter of the year, the plugin is disabled by default. You need to revisit the Preferences and enable manually. It will auto-disable if unused in awhile.
Lastly, you may have to adjust which Java instance is being used, the 32-bit or the 64-bit. Default is 64-bit, but some applets crash & burn or outright refuse to run in such a platform. You can prioritize which version you prefer by dragging on top in the Preferences.

Why is my iMac (G5) not compatible with mountain lion?

Why is my iMac (G5) not compatible with mountain lion? I have 4 GB ram (667) and around 90GB hard drive space.

Jewood20 wrote:
Why is my iMac (G5) not compatible with mountain lion? I have 4 GB ram (667) and around 90GB hard drive space.
iMac G5 can only be upgraded to 10.5.8.
If you have continuing use, you are among the lucky ones. I purchased many of these used from a company that shut down its American office. Many of these eventually suffered from the "bad capacitor" problem and required a motherboard replacement from Apple. I was lucky in that my local Genius bar approved these for no charge, even though Apple's extended warranty had expired.
My last one was my desktop Mac. It's power supply failed in 2010 and I paid for a replacement. In Summer 2011 when its HD failed, I decided it was time to move on and purchaed a Mac Mini, which I continue to run on Lion.

IMac 21.5" 2010 Running Hot with Mountain Lion

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