Comment 1 for bug 845685

It has happened with me too, but update with the synaptic! I've tried several solutions availabe on the internet like:

1 - sudo chown username:username /home/username/.ICEauthority
2 - sudo chmod 600 /home/username/.ICEauthority

3 - delete the file .ICEauthority

sudo cd /home/username
sudo rm .ICEauthority

Any of them worked.