[texasjin]

I got the same problem a few days back. Wipe it with my 5/16 full backup, same issue. I didn't have any such problem for 1+ year. Have to hard reset and put contact+email+document back, same!
Hard reset another time, only put back contacts from backup; then install apps one by one manually, also gmail back, much better last night. But this morning has one incident, but generally much better than before.
If the issue is Gmail, it could be that Google improved it maybe yesterday?
I have been using Sprint stock 6.5 rom, always. The blame to the ROM doesn't make any sense to me.