2GB microSD not responding

When I insert my card, it shows on the screen that it is updating the database and not to remove the card while it is doing that.  After that menu response time is not bad at all.  Also, I am able to insert or remove the card while the device is powered on.  You may have something wrong with your device other than the firmware so I would probably go ahead with the RMA.  I wouldn’t hold my breathe for Sandisk releasing another firmware update… they don’t seem to do it often at all.