PC -Win 7. "Aftershock" has repeated three times. Shows completed in journal twice. "Whispers in the dark" repeated once, nothing in journal on previous completion. Tolfdir's missing alembic: already returned once, he lost it again. Dragon at mages college, must have a brother because I killed two in the courtyard in the last two days.

Use both autosaves and also save over some autosaves. Problem? Is their a limit to number of saves?
Does Steam "synching" affect saves? Is it me?