Journal won't read a read-only USB key

[gnu]

B4, 611, Q2D01.

I plugged in a CompUSA 2GB USB stick (with a read-write switch) into the XO, containing a single file, "SimCity.xo". The switch was set to the read-only position (due to bug #4406 which scribbled on the key the previous time I used it).

The Journal doesn't show the USB logo at the bottom of the screen. There appears to be no way to examine a read-only USB stick from the GUI.

In the dev console, "mount" shows

/dev/sda1 on /media/COMPUSA type vfat (ro,nosuid,nodev,noatime,uhelper=hal,uid=500,umask=077)

Surely it should be possible to examine read-only media -- particularly given bug #4406 which leaves trash on read-write media.

[gnu]

After manual unmount, remove, change write-protect switch to read-write setting, reinsert, wait for mount: Now a USB key and a Journal logo appear along the bottom of the Journal screen.