Access denied in /dev/null
I installed Suse 9.1 a few days ago and some days later the message "Access denied in /dev/null" started appearing. I don't know if it doesn't appear when i log in as root (i haven't noticed it), but i'm sure it appears when i log in as a regular user. It appears when i open a terminal window in about five lines and it appears in many lines when i'm shutting down and press F2. What does this mean? Is it a problem? If yes, how can i fix it?