Has anyone had problems with their built-in flash. After some time trying to figure out how come i cannot use a alot of my setting, realized that it must be the flash not working. It does pop up when needed but does not flash at all :/ And sometime when trying to take a photo the photo seems to get like frozen on the screen having to switch it off and on again.. Anyone experienced that?? Was looking up my warranty and paperwork if it should be as bad as needing to go and see the repairer.. what a bad timing for something like that to happen!!