usb自动挂载的问题！

jiyongguang

安装了hal,gnome-mount,用的thunar文件管理，在插入u盘后能出现sda1,但是无法双击进入，提示** (gnome-mount:7932): WARNING **: Mount failed for /org/freedesktop/Hal/devices/volume_uuid_3431_69EB
org.freedesktop.DBus.Error.AccessDenied : A security policy in place prevents this sender from sending this message to this recipient, see message bus configuration file (rejected message had interface "org.freedesktop.Hal.Device.Volume" member "Mount" error name "(unset)" destination "org.freedesktop.Hal").
但是能通过别的程序，比如gxin,选择usb进入。。。奇怪。。
fstab如下：
/dev/sda1       /mnt/usb     vfat   noatime,noauto,user,rw,iocharset=utf8   0 0