I have a recent iMac and install on it OSX Moutain Lion. It works fine but it unexpectedly logout.
And if I want to do a restart it stop loading after the Apple come on the screen.
I reinstall many times form Apple server the OSX Lion Moutain and it still does the same problem.
To be more precise, I can see the problem coming when I try to use my Xerox workcenter.
At one moment I cannot print anymore, the files are there but said failed.
I try to restart the imac and it doesn't work like describe before.
After I reinstall OSX 10.8.3 it work very well... until the problem happen again under few hours.
Can you help me?
Have you tried any routine maintenance or troubleshooting? For example, a safe boot, a test user account, repairing your hard drive, repairing permissions?
Here's a reference: Mac OS X: How to troubleshoot a software issue
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