I confirm this behaviour in a eeepc 900. The mounted icon is not shown in the remix desktop for SD cards (which is mounted as /dev/sdc1).
The same happens to me for normal USB sticks, but not always. If the USB stick has a single partition the mounted icon is sometimes displayed and sometimes not (randomly, it seems to me). If the USB stick has 2 partitions the mounted icon is always displayed for the second partion and not for the first one.
I confirm this behaviour in a eeepc 900. The mounted icon is not shown in the remix desktop for SD cards (which is mounted as /dev/sdc1).
The same happens to me for normal USB sticks, but not always. If the USB stick has a single partition the mounted icon is sometimes displayed and sometimes not (randomly, it seems to me). If the USB stick has 2 partitions the mounted icon is always displayed for the second partion and not for the first one.