Does Mac Mountain Lion download stuff in the Background?

Haven't noticed it till date. But, today I started using a limited bandwidth internet plan so I was looking at the traffic. Strangely, there was constant download/upload activity.
Are there any known cases of Mac downloading stuff in the background?
Is there any way to measure this?
P.S: I disabled automatic update downloads

Any client on a network, including wireless clients you don't know about, could be consuming bandwidth. Wi-Fi networks must be protected with WPA2 security. If yours isn't, change the security setting on the access point. If it's already set that way, change the password. Make it a string of at least 8 random characters, including digits and upper- and lower-case letters. The password is saved in the keychain and you don't have to be able remember it; in fact, you shouldn't be able to remember it.
You make these changes in AirPort Utility, if the access point is an Apple device, or in a web browser otherwise.
If the network or the password was insecure, and bandwidth use returns to normal after securing it, you can be pretty sure the problem was caused by intruders.
But intrusion may not be the issue. Most often BitTorrent, iCloud, Dropbox, or some other cloud-data application is involved in cases of mysterious bandwidth use by a Mac. If you use iCloud, uncheck at least Photo Stream andDocuments & Data in its preference pane and see whether there's any change. If you use third-party network backup or file-sync software, disable that. If you use a torrent client, remove it.
Otherwise, there's no easy way to monitor network usage per process using built-in tools. If you're an advanced user and you want to try, see the manual page for the nettop(1) shell command. It may or may not provide the information you're looking for.
The third-party products Rubbernet and Little Snitch are supposed to record network usage by processes. I can't vouch for them. Both were available as free trials, the last time I checked. I suggest you uninstall either one when the question has been answered.

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HT202159 why does my mountain lion download appear to be stuck

while downloading mountain lion on my IMac it stopped and getting the message "waiting" after about three hours. It is not the wifi, because my Macbook Pro had no problem. IMac was currently running Lion.

Mac App Store: How to resume interrupted downloads
http://support.apple.com/kb/HT4485

Mountain Lion download problems with Lion 10.7.5 (no VirusBarrier issue)

I have a mid-2009 Macbook Pro. From the factory it came with Snow Leopard but has since been upgraded to Lion OS X 10.7.5. I do not have VirusBarrier, I am writing from a recently clean-installed Lion.
I have now been troubleshooting my Mac for several days. When I wrote first, I had an issue with Safari having been damaged and so I wasn't able to reinstall Lion - but after a certain extremely helpful community member I finally succeeded in installing Lion.
But the issues with the App Store still persist. All my Mountain Lion downloads fail, getting the error message "can't verify, might be corrupted" what many here have also been getting. However, most solutions were related to VirusBarrier (which I don't have), or /var/folders errors (Console does not show any var-related errors).
So if it's not a var-related issue, or related to firewalls or virus softwares (I have disabled the Firewall and I have no virus software installed), what could it be?
When the download and install of ML failed last time, Console showed the following messages:
11/30/12 11:54:44.617 AM com.apple.SecurityServer: Failed to authorize right 'system.install.app-store-software' by client '/System/Library/PrivateFrameworks/PackageKit.framework/Versions/A/Resources/in stalld' [235] for authorization created by '/System/Library/CoreServices/Software Update.app' [567]
11/30/12 11:54:44.617 AM com.apple.SecurityServer: Failed to authorize right 'system.install.software' by client '/System/Library/PrivateFrameworks/PackageKit.framework/Versions/A/Resources/in stalld' [235] for authorization created by '/System/Library/CoreServices/Software Update.app' [567]
11/30/12 12:25:49.252 PM authexec: executing /Applications/Install OS X Mountain Lion.app/Contents/Resources/InstallAssistantTool
11/30/12 12:26:17.178 PM Install OS X Mountain Lion: Stopped operation queue with Error Domain=IAErrorDomain Code=101 "This copy of the Install OS X Mountain Lion application can't be verified. It may have been corrupted or tampered with during downloading." UserInfo=0x7f93aad17ee0 {IAErrorAlternateAction=App Store, NSLocalizedRecoveryOptions=(
Cancel,
"App Store\U2026"
), NSLocalizedRecoverySuggestion=Delete this copy of the application, and go to the Purchases page of the Mac App Store to download a new copy., NSRecoveryAttempter=<IARecoveryAttempter: 0x7f93aab1e1d0>, NSLocalizedDescription=This copy of the Install OS X Mountain Lion application can't be verified. It may have been corrupted or tampered with during downloading.}
...and a bit later, upon re-starting the download:
11/30/12 12:29:40.515 PM com.apple.SecurityServer: Failed to authorize right 'system.install.apple-software' by client '/System/Library/PrivateFrameworks/PackageKit.framework/Versions/A/Resources/in stalld' [817] for authorization created by '/Applications/App Store.app' [781]
11/30/12 12:29:40.547 PM com.apple.SecurityServer: Failed to authorize right 'system.install.software' by client '/System/Library/PrivateFrameworks/PackageKit.framework/Versions/A/Resources/in stalld' [817] for authorization created by '/Applications/App Store.app' [781]
Problem elimination:
* I don't think this is a router-related issue: I have downloaded and installed other softwares outside App Store successfully
* As said, I don't think this has anything to do with Firewall or Virus settings
* Nor has this anything to do with /var/folders as far as I can tell
What I've tried so far:
* Repaired disk permissions several times
* Rebooted
* Restarted App Store
* Following one advise found on the net, I deleted preflight.pfpkg just in case
* All the time I have made sure my OS has the most recent Software Updates installed (most of them downloaded successfully, while with Safari and OS 10.7.5. I had to try several times before they were downloaded succesfully)
I just reinstalled my OS X Lion, only to use it to jump on to Mountain Lion - so I am pending my migration until ML is installed. I would like to fix this soon, since I'd like to get the migration done and my real work started. I would really appreciate your help.
I'm not very adept at using Console or Terminal to troubleshoot, so if someone could guide me through the problem identification, that would be great. Unless someone already knows exactly what's going wrong and can show me a working solution - that'd save my day!
Thanks!

In cases like this, if you have an Apple store near by, they will most likely install the OS free of charge for you, if you can't bring your Apple ID along to prove you've paid for it.
Would that work out for you?

Mountain Lion download getting stuck at 79MB w/ no internet connectivity issues

I just purchased Mountain Lion via the App Store but everytime I try to download it, the download gets stuck around 79.4MB and the download time just gets longer and longer without the download actually pausing. Pausing and resuming have the same problem, the file size just goes up to 80+MB before dropping back down to 79.4MB again. I have tried canceling, reopening the App store and re-downloading several times already without success. Please help! I went through Mountain Lion download problems in the forum but I can't find a solution. I'm downloading onto an iMac on a broadband Wifi personal home network and can surf the internet without problems and as quickly as usual. For reference, my connectivity speed at this time is usually enough to download a 300MB file in 15 mins to half an hour.

http://www.apple.com/support/mac/app-store/contact.html?form=account or try a wired connection.

Slow internet after mountain lion download

web pages open slowly or not at all after mountain lion download

I'm having the same problem but only at home with a slow internet service. At work with faster internet my macbook pro works fine. I wonder if Mountain Lion requires some minimum internet speed? Our old macbook pro (not using Mountain Lion) still works fine with our slow home internet. This change happened when I installed Mountain Lion. Also I can boot from by back up disk and bypass Mountain Lion and work with my slow internet at home. ???

How long after submitting the serial number does it take to receive your Mountain Lion download code?

I bought my new MacBook Air on July 19 and received it on 26 and on that day I followed the steps to apply for the up-to-date program for Mountain Lion.
I finished the process and got to the final page, where upon successful completion of the forms you receive a reference code. I left that page for a few minutes and went back to copy and write down the code but the page had incurred an error and when I tried to refresh I was sent back to the start of the application process.
After completing the same steps, I got to the serial number input window and clicked 'submit' but alas, it stated that 'This is an already claimed serial number.' as I had previously entered it on my first attempt.
Anyway, I didn't receive any kind of confirmation email for my application and as I have mentioned, there is no way for me to recover my reference number for the first time I filled out the form.
Has anyone else had this same issue and/or not received a confirmation email for their successful submissions and how long does it generally take to receive the Mountain Lion redemption code email from Apple?
Thanks.

Contact the Mac App Store Customer Service:
http://www.apple.com/support/mac/app-store/contact.html?form=account

HT5444 I would like to use a copy of Mountain Lion for development, but the store tells me I cannot download it because my MacBook 4,1 is not compatible! What can I do to download it?

I would like to use a copy of Mountain Lion for development, but the store tells me I cannot download it because my MacBook 4,1 is not compatible! What can I do to download it?
I have paid for it and all...

You can't do anything. See:
OS X Mountain Lion - System Requirements
       Macs that can be upgraded to OS X Mountain Lion
         1. iMac (Mid 2007 or newer) - Model Identifier 7,1 or later
         2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) - Model Identifier 5,1 or later
         3. MacBook Pro (Mid/Late 2007 or newer) - Model Identifier 3,1 or later
         4. MacBook Air (Late 2008 or newer) - Model Identifier 2,1 or later
         5. Mac mini (Early 2009 or newer) - Model Identifier 3,1 or later
         6. Mac Pro (Early 2008 or newer) - Model Identifier 3,1 or later
         7. Xserve (Early 2009) - Model Identifier 3,1 or later
Your computer does not meet the requirements to run Mountain Lion.
Upgrading to Lion
If your computer does not meet the requirements to install Mavericks, it may still meet the requirements to install Lion.
You can purchase Lion at the Online Apple Store. The cost is $19.99 (as it was before) plus tax. It's a download. You will get an email containing a redemption code that you then use at the Mac App Store to download Lion. Save a copy of that installer to your Downloads folder because the installer deletes itself at the end of the installation.
     Lion System Requirements
       1. Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7,
           or Xeon processor
       2. 2GB of memory
       3. OS X v10.6.6 or later (v10.6.8 recommended)
       4. 7GB of available space
       5. Some features require an Apple ID; terms apply.

Where is the "redeem" button to download mountain lion?, where is the "redeem" button to download mountain lion?

PLease can you tell me where the redeem button is to download mountain lion?
Instructions in the email are rubbish.

Contact Mac App Store Customer Service and let them know.

Can I stagger the OS X Mountain Lion download?

Hello,
Can I stagger the OS X Mountain Lion download as long as convenient?

That depends quite a bit on the speed of the links between your computer and the servers sending the download. Your immediate link to the internet and the link from your modem/router to your Mac are ikely to be the slowest links.
Absent information about your link speeds, "hours and hours" is the best answer I can give.

Ever since I downloaded OS X Mountain Lion on my iMac, the Safari won't often (most of the time) and I have to restart to open a web page. What is going on? What can I do?

Ever since I downloaded OS X Mountain Lion on my iMac, the Safari won't open. It loads half way and then stops. Same thing happens when we try to open a web page. If I restart the computer, it will then work. What is going on? What can I do? Help!

It will but it's only a temporary fix, ideally you should get a large external drive and move your photo library to it, do this (info)
Apple Menu>About This Mac>More Info>Storage, you will get a graphic that looks like the one below, post it here.

HT203421 Mountain Lion download has messed up my calendar. One calendar is missing on my MAc but not on my ipad or iPhone

Mountain Lion download has messed up my calendar. One calendar is missing on my Mac but not on my ipad or iPhone

OKAY FOLKS, I found the answer. I figured the only explination could be with my iCloud Account. I tried EVERYTHING, read every discussion on this topic. It WASN'T b/c I had an old Mobile Me account. It WASN'T b/c I didn't have the sttings right. I rebooted, erased data, EVERYTHING. The only solution was to create a NEW iCloud account - I chose a new address through Apple (me.com). Even though I already have a me.com email address and a different Apple ID I figured starting fresh was the only way. Sadly, I lost all of my calendar data (when I tried to import my old calendar data from a backup it was associated with the old iCloud account and could not be edited) but my contacts were saved. I just re-entered my calendar information... figured this would be less time consuming than trying to reboot and research the issue 10 more hours!
Here are the steps I used:
1- iCloud was OFF on my iPhone to start
2- Export your iCal and iContacts data from your Mac to a backup (you WILL lose your data)
3- On iPhone went to Settings, iCloud and went through the proper steps to set up a new iCloud account with a NEW email address (me.com)
4- On iMac under System Preferences I deleted my OLD iCloud account (it will prompt you stating you will lose your data or you can merge/save). The only way I could get it to work was to accept the warning it was going to delete everything
5- Set up a NEW iCloud account on my Mac with the NEW me.com account I set up on my iPhone. Somehow my Contacts were kept in tact, uploaded to iCloud and to my iPhone. Had issues with my iCal data, but I entered all the information manually.
Everything is syncing great! Haven't set this up yet on my iPad but will do that next. I'm hopeful!!

After mountain lion download the "back" function of delete key no longer is working.

After mountain lion download the "back" function of delete key no longer is working.

Here is your answer, I think.
https://discussions.apple.com/message/19048177#19048177

I get an "install failed" message. "Recovery system can't be created-click restart to return to previous version of OS X." This doesn't work. My Mac continues to try to install Mountain Lion. What is the elegant way to get my system back?

I get an "install failed" message. "Recovery system can't be created—click restart to return to previous version of OS X." This doesn't work. My Mac continues to try to install Mountain Lion. What is the elegant way to get my system back?

The first time I attempted to install ML was on a late 2011 MBP. It ran for three minutes then gave me the error message: Could not install OSX due to an unexpected error. I was using the original ML install app, not a USB or other drive.
After a couple of restarts wiht the same result I saw a message to the effect that the install was trying to close open apps. I closed apps manually a few times to no avail. I shut down instead of restarting then booted into Safe mode (hold down the shift key when starting) and that did it. The install went smoothly after that.
I since installed ML in two iMacs using a cloned copy of the install app on a USB drive. This time I shut down the computers and booted into Safe Mode first and there were no problems.
I don't know if this issue is the one causing you these problems but it is a simple enough solution to try.
Jay

Last week I've install Mac OS X Mountain Lion and then after the installation finish my IMAC start up in verbose mode. How can I turn off this mode and start my IMAC normally. I've try to key in the code "sudo nvram boot-args=" in terminal also.

Last week I've install Mac OS X Mountain Lion and then after the installation finish my IMAC start up in verbose mode. How can I turn off this mode and start my IMAC normally. I've try to key in the code "sudo nvram boot-args=" in terminal also.
Thank you for all of your answer.

I've seen it mentioned on here that a PRAM reset may solve it:
Reset PRAM
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P and R.
You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

HT1338 I want to download Mountain Lion but keep getting "the product distribution file could not be verified. It may be damaged or was not signed. What do I do?

I want to download Mountain Lion but keep getting "the product distribution file could not be verified. It may be damaged or was not signed. What do I do?

Does Mac Mountain Lion download stuff in the Background?

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