I just started getting duplicate submissions (and notification emails) for a couple forms. This just started 4 days ago for both. No plugins had been added/updated at that time and we were not getting duplicates before then.
Is there anything else besides a plugin conflict (and user submitting multiple times) that could cause this? I'm getting like 8 duplicates per submission and they are all coming in at the same time so it is not multiple submissions by the user.
Update: not all coming in at the same time...just got another duplicate... :)