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I updated my Xperia Pro to ICS. All apps in my sd card is loaded but the my gallery and music in my sd card are not. It's still show "updating music library.
Should it be like that or not?
if you have a lot of pictures and/or music it will take longer to update the apps. and also depends on the SD card class that you have.
If they still wont appear check if you can clear data for the media storage app.
Menu > Settings > Applications > Manage applications > All > Media storage > Clear data.