I reported this issue in January of 2012 and they told me I was the only one and I must have merged them multiple times. Some of the records were attached to people I hadn't been working on and were completely unrelated. I have had 30 different relatives attached to one record, none of whom have anything to do with that record.
Glad they're finally working on it. If you find a solution (other than going through and deleting them all one by one), please post it here.