Add/Delete Rows problem

I'm having a problem with the add row and delete row for my table.  I have a table set up with the add row button in the header, and the delete row button in the first cell of the row beneath the header.  I have it set so that the initial count of the row is 2.  My problem is if the user adds several rows with data, and save the form.  When that user goes back into the same form later, it keeps the several rows that the user entered, which is fine, but then it automatically adds 3 more blank rows to the table, which I don't want.  I don't understand why it is doing this.  Does anyone have a clue to why this is happening?

Thanks

Connie