For the record, I experienced this same issue after locking my account manually, with the appcenter open, and being away from the computer for a few hours. On logging in I got what appeared to be one error dialogue, but were likely many in the same screen location. I must have hit the cancel button 30 times or more.
My account has admin rights and it doesn't login automatically (goes without saying I suppose). All of the software is the most recent.
For the record, I experienced this same issue after locking my account manually, with the appcenter open, and being away from the computer for a few hours. On logging in I got what appeared to be one error dialogue, but were likely many in the same screen location. I must have hit the cancel button 30 times or more.
My account has admin rights and it doesn't login automatically (goes without saying I suppose). All of the software is the most recent.