Some Samsung Galaxy Tab users are reporting that their app icons are disappearing from the Home screen of their devices. It turns out that the icons that are usually missing are ones that have been moved to the SD card. This happens because the Home screen usually loads faster than the SD card can be mounted, so it doesn’t get a chance to read the apps and load the icons.
The only fix so far is to move the apps back to the device.
1. From the home screen, press the Menu button below the screen.
2. Select Settings.
3. Tap Applications.
4. Tap Manage Applications.
5. Select an app that’s missing from the Home screen
6. Tap the Move to device button.
Try to restart the Galaxy Tab again. Hopefully the app icons don’t disappear.