Often after a reboot, crash or USB usage, icons of apps go missing. Both in the "Home" screens and "Applications".
Currently I have four screens of apps, three in Home. Some of the icons understandably vanish when the SD is taken by eg. USB Storage to PC mode (because they are in part stored there), but often refuse to reappear even after restarting the phone.
Is there config file stored somewhere in my rooted Android 2.2 responsible for the current desktop layout of shortcuts? Or way to back it up & restore (even the stale shortcuts), or force refresh based on existing apps in internal or external memory?