A Problem with the update icon

Hello,
Sometimes when the red exclamation-mark icon comes on the screen I cannot click on it. Trying to click on the icon nothing happens. The only way to fix it is to logout and log back in again.
It seems to be more noticeable when system has been on for a few days.
Cheers.
Sometimes when the red exclamation-mark icon comes on the screen I cannot click on it. Trying to click on the icon nothing happens. The only way to fix it is to logout and log back in again.
It seems to be more noticeable when system has been on for a few days.
Cheers.