After starting my phone, I often find apps are missing. Usually 1-3 are missing, but I have had as many as 6-10 go missing. Anything can go missing; it isn't the same apps over and over. All I have left for each is a gray icon that can't be used. Restarting might bring back some or all of them, but then other apps will go missing. I can restore from My Backup Pro, but it prompts me to restart, and then something else will be missing after the restart. So all I can do is uninstall and redownload the apps. I use ICS 4.0.4 and not rooted. Can anything be done to keep installed apps installed?