Mountain Lion Freezing Problem

Last year i installed Mountain Lion, in started freezing and i had to shut it down and restart it again.

The next time the problem happens, note the date and time the problem occurred, then go to Applications/Utilities/Console and copy the log starting at the time of the crash. Paste the log in a reply. Please do not use a screen shot as they can be hard to read. If there are repeated runs of the same messages, please post only one run. Be selective about what you post and don’t  post huge amounts. Make sure there is no personal data visible. Information learned from Linc Davis.
Try running this program and then copy and paste the output in a reply. The program was created by Etresoft, a frequent contributor.  Please use copy and paste as screen shots can be hard to read.
Etrecheck – System Information

Similar Messages

  • My mail app in Mountain Lion freezes

    My mail app in Mountain Lion freezes a few second to a few minutes after launching. I have already re-installed the OS but it didn't help.  Any thoughts?
    I have one exchange account that I have removed and reinstalled.  I've tried to see if it's conflicting with any of my other apps, I can't find anything there either.  Never had this problem before, but would like use of this app.  Thanks.
    Mark

    More info.  It seems to freeze when switching between mail and other apps.  It then becomes impossible to switch back to the mail app, though mail will be indicated in the app name just to the right of the apple menu

  • Mountain Lion freezes when opening pdf file on preview

    Mountain Lion freezes when opening pdf file on preview. I have to power down my Mac

    Mountain Lion freezes when opening pdf file on preview. I have to power down my Mac

  • After a long in "stop" period, the internet connection (ethernet) doesn't work. before updating to mountain lion this problem didn't exist.

    after a long in "stop" period, the internet connection (ethernet) doesn't work. before updating to mountain lion this problem didn't exist.

    Gave up on the GUI.  This script derived from http://blog.netnerds.net/2012/07/os-x-how-to-setup-nat-on-lion-and-mountain-lion / seems to work for me:
    gwdev=en0 # This is my WiFi connection (has Internet connection)
    targetdev=en1 # This is the USB to Ethernet adapter (to give Internet connection)
    /sbin/ifconfig $targetdev down
    /sbin/ifconfig bridge0 create
    /sbin/ifconfig bridge0 up
    /sbin/ifconfig bridge0 addm $gwdev
    /sbin/ifconfig bridge0 $HOST_ADDR
    /sbin/route add default -interface bridge0 -ifscope bridge0 -cloning
    /usr/sbin/sysctl -w net.inet.ip.forwarding=1
    /sbin/ipfw add 100 divert natd ip from any to any via $gwdev
    /usr/sbin/natd -interface $gwdev -use_sockets -same_ports -unregistered_only -dynamic -clamp_mss -enable_natportmap -natportmap_interface $targetdev

  • I have a MacBook early 2008 running OS X Lion 10.7.5 (11G63). Could I upgrade to Mountain Lion without problems?

    I have a MacBook early 2008 running OS X Lion 10.7.5 (11G63). Could I upgrade to Mountain Lion without problems?

    No... the specs are
    MacBook (Late 2008 Aluminum, or Early 2009 or newer)
    http://www.apple.com/osx/specs/

  • Mountain Lion WiFi Problems (recap)

    Folks, wanted to recap this as I am finding the problem much more broad than my original post (here: https://discussions.apple.com/message/19123146#19123146). Here's my setup:
    MacBook Air 13", Mid 2011
    Mountain Lion
    Wifi Problems, cannot connect to open wi-fi and Sprint hot spot.
    CAN connect to Time Capsule (at least I could before I started futzing with my setup while on the road)
    here's what I've done so far:
    Reset SMC
    Zapped PRAM
    Reduced MTU to 1300
    Set hotspot to 802.11g only
    Set IPv6 to Local-link only
    Set up a new user account, no connection there either
    Repair disk
    Repair disk permissions
    Removed WiFi in networking control panel and re-add.
    Remove the network from control panel AND remove keys from Keychain
    What I have not done but will try later:
    Reinstall ML
    Disable WMM
    Observations:
    ML seems to think there is a connection to the wi-fi, but it can never get an IP address
    Using a static IP on the network doesn't help the problem
    My hotspot never really registers the MBA as a connection

    Tell you what worked for me .. finally.
    Had two Apple technicians on the case - over the phone. Have to say, those guys are awesome! - with patience of saints! But to the point! As there was nothing obviously wrong with operating system, they promised to call me back the following day but suggested talking to my Internet Service Provider about the router (D-Link router). The ISP remoted to my iMac and logged into router site and changed channel selection from automatic to manual. He chose channel 13, and suddenly my MBA connected and has been connecting smoothly ever since. The reasons I had problems was that there was over 10 available wi-fi networks in my flat, some of which showed as having stronger signal than my own. The ISP guy told me this, increasingly, becomes and issue, especially in blocks of flats - the ether is  filled with wi-fi networks to the point of saturation. He also said, his choice of channel 13 was just a fluke and it might turn out I'd have to change it again. 
    So, although the problem is now solved, there still remains this one nagging question: Why did the wi-fi connectivity zonked right after Mountain Lion upgrade?

  • Mountain Lion freezes my iMac several times a day, whats the problem?

    and i do so whith what ever program I´m working with, Safari, Firefox, Adobe Illustrator or InDesign CS6, Mail, and so on …
    is ther a bug in Mountain Lion 10.8.2?

    Make sure your system is up to date with all available Software Updates since this problem was supposed to have been fixed some months ago, but I understand it remains for some users.
    Assuming everything is up to date, try this: Using the Finder's Go > Go to Folder... menu, open the following folder
    /Library/Preferences/SystemConfiguration
    Drag these three files to the Desktop:
    com.apple.airport.preferences.plist
    com.apple.network.identification.plist
    preferences.plist
    This will only make copies of them. If they still exist in the folder, select each of them and then drag them to the Trash. You will need to authenticate with your Administrator name and password.
    Restart your Mac and log in again. Your wireless network will not be selected automatically, so select it from the Wi-Fi menu. The three Preference files above will be replaced with new ones.
    Use the Mac and determine if this made any difference. If you think it's fixed, you can drag the three files from the Desktop to the Trash. If not, you can always drag them back to the original folder. You will have to authenticate again, and your previous network preferences will be restored.

  • Mountain Lion Freezes From Sleep Mode

    It seems like Mountain Lion is going into this "kernel" panic mode after I try to bring my computer back from sleep mode.  That thing everyone a lot of people talking about where it locks up and you can't force quit anything or do anything except watch the spinning beach ball and move between open applications.
    These
      Model Name:          iMac
      Model Identifier:          iMac11,1
      Processor Name:          Intel Core i7
      Processor Speed:          2.8 GHz
      Number of Processors:          1
      Total Number of Cores:          4
      L2 Cache (per Core):          256 KB
      L3 Cache:          8 MB
      Memory:          8 GB
      Processor Interconnect Speed:          4.8 GT/s
      Boot ROM Version:          IM111.0034.B02
      SMC Version (system):          1.54f36
      Hardware UUID:          E1ECD31D-0FEF-5073-9ABE-F9BB5C19F503
    For what its worth I have tried removing all peripherals and see if it does it and it still does it.   This behavior doesn't happen to me at all while using the machine normally, only when I am coming back from sleep mode.   When I upgraded it didn't list any incompatible software.    Also I am noting that after a few trys I can relaunch finder but the spinning beach ball remains.   I was thinking that it was something like Windows Explorer crashing but it seems lower level problem then that.   There is something hanging and it doesn't seem like an application.   Seems like something in the OS, well, obviously because this wasn't happening before I upgraded.   I am just going to shut my machine down after I am doing using it for now so I am not hard resetting it four times per day.  Has anyone else seen this behavior?

    Okay, it has been over 30 hours since my iMac has done this.    It doesn't have that problem where it sits and spins any more.   My workaround is to go into System Preferences, Energy Saver, and slide the Computer Sleep all the way to NEVER.   I still put my display to sleep same time though.  And I also uncheck Put Hard Disks to Sleep When Possible.    That seems to have done the trick for me.    I have done nothing else to remedy this and my rig would freeze up on my three times per day so there you have it.    Hopefully they will fix whatever issue is plaguing the sleeping computers.   I know there are alot of them out there set that why by default.

  • Mountain lion freezes

    I upgraded to mountain lion but applications start to freeze whenever oppening app store, clicking share button on safari , signing in into twitter from system preferences , I verified disk +  permissions and repaired them, but this did not solve the problem, can you need help  me in this issue?

    Hi to everyone. I would just like to post how I think might have solved the freezing issue of Mountain Lion. I have posted in this thread a couple of weeks passed and I still see some do experience freezing still.
    I have a Macbook Pro 13" late 2011 preinstalled with OS X Lion. I installed Mountain Lion last July 26 directly from MacUpdate when all **** started. Apps crashed. Screen Froze etc.
    I have read most and did what have been suggested here but failed to solve the issue. And calling Apple would is in no way an option for me since I am from Manila, Philippines. Besides some of you even mentioned calling them lead to no solution. So I thought, given the hours people waisted calling up on Apple, why not do a clean install instead. Hours spent installing is better than waisting up on Apple's genius without any luck.
    Clean install did fix the problem.
    STEPS:
    1. Back up your files (pictures, documents, music, movies. Do not include your apps (may it be 3rd party software or from macappstore). You may opt to use Time Machine but when it comes to restoring it back, do not restore the entire backup. What I did was just to restore my Music, Movies, Pictures.
    2. Restart Mac and boot via USB (with Mountain Lion installer).
    3. Reformat your hardrive with Disk Utility. Then install Mountain Lion 10.8
    4. Update via macappstore to 10.8.1
    5. Restore your files manually or choose the folders via Time Machine.
    6. Then install all your other apps.
    7. Finish!
    I hope this helps. I haven't had any issues to date.
    After a clean install, no freezing will ever be experienced, a 30 second boot up time, 5 seconds to shutdown my mac, and a manageable 5 hour battery life.

  • ITunes makes Mountain Lion Freeze - Please Help

    Hi there:  Mountain Lion seems rock solid on my mac pro except when I listen to music with iTunes - it will freeze the system (no more music, just a frozen screen saver)...  Power cycle (holding down the power button) is the only way to unfreeze it...  All other apps run just fine with no issues.  Also, I'm connected to airport express via ethernet, not wifi.  Has anyone seen this problem before?  Please advise and thank you very much! 

    I have the exact same problem except on a imac, with 16G ram. Also not hooked to WiFi. I have an app called Logic Pro (music maker) and I wonder if that is causing it

  • Mountain Lion freezes when opening Chrome, Firefox, and Safari

    Hi, I have a mid-2012 750GB MacBook Pro 15" (NOT the retina display) with Mountain Lion 10.8.4.
    As of a few weeks ago (mid July 2013), whenever I opened Chrome, the laptop would freeze a few minutes later. The arrow changed to the beach ball and could move, but I couldn't click anything and Force Quit would not open. I had to manually power down the laptop each time. I tried Safari and Firefox and got the same results.
    HOWEVER, I downloaded a basic web browser called Lightning which hasn't caused any freezes at all.
    But as it's a pretty crappy program, I'd like to have this problem fixed before I go back to college this fall.
    Any ideas? Any other details/info I should post? All help is appreciated Thanks

    Please read this whole message before doing anything.
    This procedure is a diagnostic test. It won’t solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
    Third-party system modifications are a common cause of usability problems. By a “system modification,” I mean software that affects the operation of other software — potentially for the worse. The following procedure will help identify which such modifications you've installed. Don’t be alarmed by the complexity of these instructions — they’re easy to carry out and won’t change anything on your Mac. 
    These steps are to be taken while booted in “normal” mode, not in safe mode. If you’re now running in safe mode, reboot as usual before continuing. 
    Below are instructions to enter some UNIX shell commands. The commands are harmless, but they must be entered exactly as given in order to work. If you have doubts about the safety of the procedure suggested here, search this site for other discussions in which it’s been followed without any report of ill effects. 
    Some of the commands will line-wrap or scroll in your browser, but each one is really just a single line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, and you can then copy it. The headings “Step 1” and so on are not part of the commands. 
    Note: If you have more than one user account, Step 2 must be taken as an administrator. Ordinarily that would be the user created automatically when you booted the system for the first time. The other steps should be taken as the user who has the problem, if different. Most personal Macs have only one user, and in that case this paragraph doesn’t apply. 
    Launch the Terminal application in any of the following ways: 
    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.) 
    ☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens. 
    ☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid. 
    When you launch Terminal, a text window will open with a line already in it, ending either in a dollar sign (“$”) or a percent sign (“%”). If you get the percent sign, enter “sh” and press return. You should then get a new line ending in a dollar sign. 
    Step 1 
    Triple-click the line of text below on this page to select it:
    kextstat -kl | awk '!/com\.apple/{printf "%s %s\n", $6, $7}' | open -f -a TextEdit 
    Copy the selected text to the Clipboard by pressing the key combination command-C. Then click anywhere in the Terminal window and paste (command-V). A TextEdit window will open with the output of the command. If the command produced no output, the window will be empty. Post the contents of the TextEdit window (not the Terminal window), if any — the text, please, not a screenshot. You can then close the TextEdit window. The title of the window doesn't matter, and you don't need to post that. No typing is involved in this step.
    Step 2 
    Repeat with this line:
    { sudo launchctl list | sed 1d | awk '!/0x|com\.(apple|openssh|vix)|org\.(amav|apac|cups|isc|ntp|postf|x)/{print $3}'; sudo defaults read com.apple.loginwindow LoginHook; sudo crontab -l; } 2> /dev/null | open -f -a TextEdit 
    This time you'll be prompted for your login password, which you do have to type. Nothing will be displayed when you type it. Type it carefully and then press return. You may get a one-time warning to be careful. Heed that warning, but don't post it. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator. 
    Note: If you don’t have a login password, you’ll need to set one before taking this step. If that’s not possible, skip to the next step. 
    Step 3
    { launchctl list | sed 1d | awk '!/0x|com\.apple|org\.(x|openbsd)/{print $3}'; crontab -l 2> /dev/null; } | open -f -a TextEdit 
    Step 4
    ls -A /e*/{la,mach}* {,/}L*/{Ad,Compon,Ex,Fram,In,Keyb,La,Mail/Bu,P*P,Priv,Qu,Scripti,Servi,Spo,Sta}* L*/Fonts .la* 2> /dev/null | open -f -a TextEdit  
    Important: If you formerly synchronized with a MobileMe account, your me.com email address may appear in the output of the above command. If so, anonymize it before posting. 
    Step 5
    osascript -e 'tell application "System Events" to get name of every login item' | open -f -a TextEdit 
    Remember, steps 1-5 are all copy-and-paste — no typing, except your password. Also remember to post the output. 
    You can then quit Terminal.

  • Mountain Lion Freezes 30 Seconds Every Hour

    I've recently migrated from a Mac Pro running Lion to a MacBook Pro running Mountain Lion. I migrated using a Time Machine backup and to make a long story short, it was an ordeal, but I've got everything running smoothly now… Everything except for one thing.
    Once an hour, everything but the mouse freezes. The clock stops. If time machine is backing up, the backup icon stops moving. Everything stops for about 30 seconds and returns to normal. It happens very consistently on the same minute and the same second every time until a reboot and the one hour clock starts ticking anew from my boot up time.
    I thought that maybe Time Machine was the culprit here, but I turned that off and freezes continued happening. Also, there is nothing in my log files that show anything happening at the time of each freeze. This is driving me nuts.
    Any help would be appreciated.

    How to maintain a Mac
    1. Make redundant backups, keeping at least one off site at all times. One backup is not enough. Don’t back up your backups; make them independent of each other. Don’t rely completely on any single backup method, such as Time Machine. If you get an indication that a backup has failed, don't ignore it.
    2. Keep your software up to date. In the Software Update preference pane, you can configure automatic notifications of updates to OS X and other Mac App Store products. Some third-party applications from other sources have a similar feature, if you don’t mind letting them phone home. Otherwise you have to check yourself on a regular basis. This is especially important for complex software that modifies the operating system, such as device drivers. Before installing any Apple update, you must check that all such modifications that you use are compatible.
    3. Don't install crapware, such as “themes,” "haxies," “add-ons,” “toolbars,” “enhancers," “optimizers,” “accelerators,” “extenders,” “cleaners,” "tune-ups," “defragmenters,” “firewalls,” "barriers," “guardians,” “defenders,” “protectors,” most “plugins,” commercial "virus scanners,” "disk tools," or "utilities." With very few exceptions, this sort of stuff is useless, or worse than useless.
    The more actively promoted the product, the more likely it is to be garbage. The most extreme example is the “MacKeeper” scam.
    As a rule, the only software you should install is that which directly enables you to do the things you use a computer for — such as creating, communicating, and playing — and does not modify the way other software works. Never install any third-party software unless you know how to uninstall it.
    The free anti-malware application ClamXav is not crap, and although it’s not routinely needed, it may be useful in some environments, such as a mixed Mac-Windows enterprise network.
    4. Beware of trojans. A trojan is malicious software (“malware”) that the user is duped into installing voluntarily. Such attacks were rare on the Mac platform until sometime in 2011, but are now increasingly common, and increasingly dangerous.
    There is some built-in protection against downloading malware, but you can’t rely on it — the attackers are always at least one day ahead of the defense. You can’t rely on third-party protection either. What you can rely on is common-sense awareness — not paranoia, which only makes you more vulnerable.
    Never install software from an untrustworthy or unknown source. If in doubt, do some research. Any website that prompts you to install a “codec” or “plugin” that comes from the same site, or an unknown site, is untrustworthy. Software with a corporate brand, such as Adobe Flash Player, must be acquired directly from the developer. No intermediary is acceptable, and don’t trust links unless you know how to parse them. Any file that is automatically downloaded from a web page without your having requested it should go straight into the Trash. A website that claims you have a “virus,” or that anything else is wrong with your computer, is rogue.
    In OS X 10.7.5 or later, downloaded applications that have not been digitally signed by a developer registered with Apple are blocked from loading by default. The block can be overridden, but think carefully before you do so.
    Because of recurring security issues in Java, it’s best to disable it in your web browsers, if it’s installed. Few websites have Java content nowadays, so you won’t be missing much. This action is mandatory if you’re running any version of OS X older than 10.6.8 with the latest Java update. Note: Java has nothing to do with JavaScript, despite the similar names. Don't install Java unless you're sure you need it. Most users don't.
    5. Don't fill up your boot volume. A common mistake is adding more and more large files to your home folder until you start to get warnings that you're out of space, which may be followed in short order by a boot failure. This is more prone to happen on the newer Mac notebooks that come with an internal SSD instead of the traditional hard drive. The drive can be very nearly full before you become aware of the problem. While it's not true that you should or must keep any particular percentage of space free, you should monitor your storage consumption and make sure you're not in immediate danger of using it up. According to Apple documentation, you need at least 9 GB of free space on the startup volume for normal operation.
    Use a tool such as the free application OmniDiskSweeper to explore your volume and find out what's taking up the most space. Move rarely-used large files to secondary storage.
    6. Relax, don’t do it. Besides the above, no routine maintenance is necessary or beneficial for the vast majority of users; specifically not “cleaning caches,” “zapping the PRAM,” "resetting the SMC," “rebuilding the directory,” “running periodic scripts,” “deleting log files,” “scanning for viruses,” or “repairing permissions.” Such measures are for solving problems as they arise, not for maintenance.
    The very height of futility is running an expensive third-party application called “Disk Warrior” when nothing is wrong, or even when something is wrong and you have backups, which you must have. Disk Warrior is a data-salvage tool, not a maintenance tool, and you will never need it if your backups are adequate. Don’t waste money on it or anything like it.

  • Do i have a virus, or is it just Mountain Lion teething problems?

    Ever since i upgraded to Mountain Lion, it has impressed me, but also shocked me. It has some really useful features, and looks beautiful, but i cant help wondering if Apple is loosing it's touch, when it behaves like Windows Vista. The first problem was that it randomly kept restarting whilst in sleep, whick causes lots of problems. That has stopped now, but the are even worse problems. Web based application ofthen crash and are unresponsive, and it denies the existance of my Air port, which it is connected to, which keeps all the backups. Also, I recently noticed a Java DMG in Disk utility, but it wasn't in finder, when i looked, so i ejected it using disk utility. These are all tell tale signs of a virus, however, it also claims that the bootcamp partition doesn't exist, (yet i can still boot from it, and use windows), and also it told me that it couldn't eject Macintosh HD, because itunes was using it. Why would I ask my best computer to commit suicide? Also, when i connect my portable hard drive to it, it doesnt show up, but if i connect it in Windows or on another Mac, it works fine. So, it's either a virus, a reliability issue in Mountain Lion, Please help.

    You don't have a "virus." That's the Windows way of thinking. You have a misconfigured system. What exactly happens when web-based applications crash?

  • Logic 9 + Mountain Lion = Performance Problems

    Hi,
    After months of debating to upgrade to Mountain Lion, I did it (and regret it like iOS 6).
    I'm just wondering if anyone gets the issue with Logic 9, where it works for around an hour no problems, then the CPU meter goes mental and causes glitching in the audio no matter what I/O buffer size I choose, or what sample rate my projects in, OR how many plugins/instruments I have open?
    It's really starting to affect my clients as to solve the problem the OS needs a full reboot.
    I am fully updated in Software Update and it worked perfectly until Mountain Lion.
    Hope there is a solution!
    Tim

    Your question is too vague... More details are required...

  • 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?

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