Hi guys I've installed Mavericks today on my 2009 iMac and ever since it's installed, I'm logging in as usual and then it spends around 30 seconds loading my 'open at login' apps and then it just stops and sends me back to the login screen with the user name and password. Do you have any idea why this might be happening? It might be a conflict with an app or two, perhaps? If so, how do I go about removing them? I've tried going into Safe Mode but the same thing happens and I've also tried repairing and verifying disks and disk permissions in recovery mode, and I'm out of ideas. Can someone help? I would really appreciate it. Thanks Steve.