10-04-2010, 09:34 AM
sorry for my bad english.
I had this morning the same problem after updating OSX (Not sure witch of the 3 updates was, 1 Xcode, 2 Security Update, 3 Itunes 10.1).
I could not login with my adminstrator account, but i could with the guest account.
From the guest account i created with my admin account credentials, one new admin account. But had the same problem, not possible to login.
I boot up in safe mode (shift key during power button press). I could login with the 2 admin accounts, my account and the new one. There was ONE startup item in the new account. A system wide startup item for administrator accounts, for managing the wd books mac edition. I deleted this entry and all is working again, selecting the entry and click -.
The application is: WDDriveManagerStatusMenu.app
I hope this will help you to resolve the issue.