When root user is logging in to GNOME, error "`/root/.gvfs':Permission denied" occurs if a normal user runs df.

Issue

• When root user is logging in to GNOME, the following error occurs if a normal user runs df.

$ df -kl
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/sda2             24670076   3751464  19665444  17% /
tmpfs                  1030908       100   1030808   1% /dev/shm
/dev/sda1                99150     25491     68539  28% /boot
df: `/root/.gvfs': Permission denied