You know what? I'm having the same problem. Every time I turn off my phone now, and turn it on again, this icon that I just placed in there quite recently would always disappear and I have to go to applications to put it back in. It looks like Android isn't gonna catch up anytime soon... I have a problem deleting photos that I captured during a certain period late last year. It seems to take forever and the work doesn't get done, end task and try again still doesn't work... My phone keeps hanging and restarting 3months ago also while attempting to launch messages or gallery.
Don't know what