Mountain Lion upgade problem

I update to Mountain Lion and now after reboot I can't get past the login screen. It accepts my pw and shows my desktop for a second then goes back to login screen.

Boot with the Recovery HD (CMD+R), launch Disk Utility, repair the disk, and reinstall ML.

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

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    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:
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    Mountain Lion
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    Tell you what worked for me .. finally.
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    Your question is too vague... More details are required...

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    * Rebooted
    * Restarted App Store
    * Following one advise found on the net, I deleted preflight.pfpkg just in case
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    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.
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    Christo
    I am on a Late 2011 13' Macbook Pro, OsX 10.7.5

    Contacted Apple Store Tech support requesting a solution. I received a reply from a gentleman telling me his area of expertise and that this problems didn't fit in his area of expertise and suggested I look on online forums and the like for a solution!!
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    Thanks for http://www.apple.com/support/mac/app-store/contact.html?form=account. Have not received a reply from Apple after 48 Hours.
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    Logging out and back onto the Online Store
    Deleting the Apple Store cache on my HD
    Connecting via an Ethernet cable instead of WI-FI
    Using my iPhone 3G Data, teathered
    Connecting via a totally different network
    Restarting, restarting, restarting...
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    Here's the problem:
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  • After Mountain Lion update - problems synching contacts and accessing previous Time Machine backup

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    Jeff

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    Open system preferenes. go to the icloud tab. sign out. then sign in.
    jdxxs wrote:
    I have just set up a MacBoook Pro with a new SSD drive to replace the internal hard drive. I made sure I had a current Time Machine then connected the SSD drive externally and installed Mountain Lion. I installed the SSD drive into the computer. Before restoring applications from the Time Machine backup, I enabled the root user, logged on as that and deleted all other accounts as I have previously had issues with creating a new account from a backup and making that the 'home' user.
    All went well except that a few seconds after I opened Contacts they all disappeared. They were replaced with two entries - one for Apple and one with the name of the home account.
    I tried to retrieve Contacts from the Time Machine backup. I could see all the past dates but they were all red and inaccessible.
    I looked at Contacts in my account at iCloud.com - they were the same 2 contacts as my local machine. I went through the installation process again but made sure that there was no connection to the Internet on completion. My contacts were intact. I exported them to a file and turned on the Internet. A few seconds later, my Contacts were gone..!
    I imported from the backup I had made but, after a few seconds they were replaced with the two contacts from iCloud. Nothing I tried would allow me to add the contacts and have them synch to iCloud. I finally found a workaround:
    1  disconnect from the Internet
    2  import Contacts from the export file
    3  select all contacts (ctrl-A) and drag them to the 'on my mac' account in Contacts
    4  connect the Internet and watch all the contacts disappear from the iCloud account
    5  select all contacts from the 'on my mac' account adn drag them to the iCloud account.
    6  watch them synch to iCloud
    I still don't understand the problem - perhaps someone can enlighten me - but here's the workaround if someone is having the same problem.
    And I still can't access the Time Machine backup that I used to setup the MacBook Pro. Looking at the files within the Time Machine the backup. it looks as though it is probably a permissions issue but I don't see why as the account I am using is the same name as the one used to create the backup. Any guidance would be appreciated.
    Jeff

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  • Mountain lion messages problem

    Hi
    I have just set up my new imac, but I'm having problems with Messages.
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    9:04 PM      Monday; March 25, 2013
      iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.3)
     G4/1GhzDual MDD (Leopard 10.5.8)
     MacBookPro 2Gb (Snow Leopard 10.6.8)
     Mac OS X (10.6.8),
     Couple of iPhones and an iPad
    "Limit the Logs to the Bits above Binary Images."  No, Seriously

  • Mountain Lion installation problem?

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