I woke up this morning to the"SD card removed" message and haven't done anything to check the card yet. I hoped reading this thread might provide some insight, but instead it was mostly a waste of time with various people continuing to attack those with SD card issues.
My phone is a vzw 32 gb blue with a 32gb SanDisk class 10. The card is used for photo and video storage and app backups.
And I do use Dropbox but I am constantly filling it, and don't always have the time to delete the unwanted photos in s timely manner.