Imac sleeps then wont let me login since Mountain Lion upgrade.

Upgraded my I7 2010 Imac to Mountain lion but now when waking up the computer from sleep, when I enter the password I just get the spinning ball.
In the end I have to hold the power button to shut it down then re power back up and log in.
Getting very annoying now and looking through google noiced other people with a simialr problem.
Obviously missed in all the Beta versions.
Does anyone have a work around for it.
I have tried Repairing the disk, Reseting PRAM and the SMC. I have also tried removing my password but it still hapens.

Then you bought your iMac used and even though it had Mt Lion installed on when You Got It, it shouldn't have. The seller should of reinstalled the original shipping version of OS X on it before it was sent/given to you.
You will need to reinstall the original version of OS X that came on that Mac when it was new. That could of been Lion, Snow Leopard or Leopard.
What you should do is this.
1) First try bootiing the system from the Online Internet Recovery system. Hold down the Command + Option + r keys and keep them held down until you see a globe on the screen. If your Mac come with OS X Lion when it was new you will be able to reinstall that version.
2) Even IF your Mac can boot from the Online Internet Recovery system but you get an Error when trying to reinstall OS X then your iMac came woth one of the older OS X version and you will need the Original system reinstall discs that came with every Mac before Lion came out. If the seller did not supply those original discs you can order a Replacement set from Apple by calling Apple and have your iMac serial number. There is a small fee involved to get the replacement set of discs.

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I bought my iMac a few weeks ago, shouldn't the mountain lion upgrade be free?

See Apple - Free OS X Mountain Lion upgrade Program.

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I performed a Mountain Lion upgrade on a 2011 MBP running Lion this weekend. The Mac may have been set up to connect to an AD server with my user account, but I thought I had disabled that months ago... aparently not. I performed the upgrade at home not on the corporate network.
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No worries with the basic questions... it's important to cover all the bases. Thanks so much for the input.
- I'm trying to log in with the same username I would use to ssh in... so yes.
- I don't know if the account was a mobile account. The Mac was given to me configured about a year ago, configured to be on the domain. I since have used it on and off many networks without considering it was set up to be on a domain.
- Never had a problem logging into the machine before the mountain lion install, although to be honest it was very very rarely ever rebooted.
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Why is Safari so slow after Mountain Lion upgrade?

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Since upgrading to ML my connection speed both over the wifi and directly connecting to the router has dropped from 30-50 down and 5 up to between 1-4 down and 4 up. I have had the cable folks here to test lines. We've swapped out the modem with a new one. I bought a new netgear N600. Everything led to the same result.
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So I start suspecting Mountain Lion. BUT the older iMac cannot be upgraded to Mountain and is still running Lion and has the same issue. The equipment is in the same place it's always been. We've added no electronics that would be interfering with signals.
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Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode* and log in to the account with the problem. The instructions provided by Apple are as follows:
Shut down your computer, wait 30 seconds, and then hold down the shift key while pressing the power button.
When you see the gray Apple logo, release the shift key.
If you are prompted to log in, type your password, and then hold down the shift key again as you click Log in.
*Note: If FileVault is enabled under OS X 10.7 or later, or if a firmware password is set, or if the boot volume is a software RAID, you can’t boot in safe mode. Safe mode is much slower to boot and run than normal, and some things won’t work at all, including wireless networking on certain Macs. The next normal boot may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Test while in safe mode. Same problem? After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

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This may work:
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That sounds like LaunchServices. These are only cache files but can get corrupted. Launch /Utilities/Terminal and copy & paste this at the command line to rebuild LaunchServices: (be sure to copy the entire line it's a scroll)
Code:
/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -r -domain local -domain system -domain user
Then press return. Wait until terminal returns to the command line. Quit Terminal. After that, log out and back in or restart. Let us know
Or, use the free utiltiy OnyX to do the same via gui
http://www.macupdate.com/app/mac/11582/onyx (for 10.8)
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Not having much luck and not sure which forum to post in as this could be a Mountain Lion issue, an iWork issue, but is also an iWork and/or IOS6 issue!
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In the meantime, I upgraded my iMac from Lion to Mountain Lion. Since I was having problems accessing my work files and viewing them on my iPad, I decided to buy Keynote on my iMac in the hope that I could get on with some work on iMac rather than iPad. I logged on to my school server and tried to open a powerpoint file and for some reason it downloads it as a pptx.exe and if I try to open it I get an error message saying "You can't open the application xxx.pptx.exe because Microsoft Windows applications are not supported on OSX". It shouldn't be a .exe file it should just be a powerpoint file! When I open Keynote and look for available files on my iMac, the file I just downloaded is greyed out.
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Now having forked out for Keynote on my iMac, I have the same problem.
I am able to open attachments in emails and I am able to log on to the school VLE and access and open files. So it is just something to do with opening from the normal file system that I can't do.
I posted in the iPad and iWork forum and had no replies. However, Apple iWork team have contacted me after reading my post re the iPad issue of opening files from my network. I've provided info to them and am waiting for a response, but in the meantime I have now discovered there is also an issue on my iMac. Hopefully they will read this too or someone else will perhaps know what is going on.
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Thanks for the response but I think you've misunderstood the problem. I can not open any type of PowerPoint file off my server in keynote. This includes .ppt and .pptx files. (Also includes .doc, .docx, .xls, .xlsx in pages and numbers).
Even if what you said worked it would take forever to go through every file and save them all as ppt 2007. Plus of course, I don't know what files I will need when. There are hundreds of resources I need to access when I'm at home. I need the flexibility to view the files when i need to and on the go. Normally I can download them off my school network on to my iPad in keynote and edit them then I email them back to myself ready to use the next day or to save back to my network. Currently I can not download any Microsoft office file. So I am now forced to have to lug my laptop home everyday, rendering my iPad and iMac useless. I can't pre-empt what I'll need and save it as .ppt as that is completely inflexible and that won't open anyways as this is not an issue with the version of PowerPoint file. This is an issue with how all Microsoft files are downloading from my school network to my iPad and iMac. I want Apple to allow this to work like it used to before the upgrades in operating systems. I wish I hadn't upgraded as it worked perfectly. :(

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Were you running os x 10.6 before the upgrade?
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and mountain lion can only run intel applications natively like photoshop cs3-cc.
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I have checkec my system preferences for the account login applications, and it's not checked. I also check the Calendar app settings and it doesn't say to automatically start up anywhere.
Is this a new feature of this OS? how can I change this?
Thanks!

Nope.
The problem is this: applications that are running (e.g. chrome, spotify) start up again after restarting the macbook even though I unchecked the box to 'reopen windows at startup'. Furthermore, the Calendar application starts automatically at startup even if this wasn't open when the macbook was shut down.
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Imac sleeps then wont let me login since Mountain Lion upgrade.

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