TOPIC: Getting duplicate email confirmations

Hi,
For a few registrations lately we have been getting multiple (sometimes 10 or more!) email confirmations sent out. Sometimes the duplicates span days (get one each day) and sometimes get a bunch on one day, all for the same registration. Another odd thing is one record I changed to pending (since it should be pending as not all payment has been received) and then the next day I will get another confirmation email but this time the record is marked active! This doesn't happen with all registrations (say three out of 22) but when it does, it is beyond annoying and I am sure is not fun for the person who registered.
Any ideas/help?
J1.5/DT Reg 2.79 latest update
Thanks!

Wow, really need some help on this one. Still getting duplicate email confirmations after someone registers, even DAYS layer. Today someone registered and already have five emails from one registration. Thanks for any help.