Wanted to pass this along...Client upgraded from 4.3 to 4.4. Tried to do Receipt of Invoice - Totals tab showed double the Lines tab. Verified PO was OK, happened on more than one PO, more than one vendor. On a whim I clicked on Tax Detail button. Saw two lines for 2 tax codes - DEFAULT and NONTAX. Sure enough, DEFAULT tax schedule had 2 tax codes. Deleted the second one and all worked fine. Checked 4.3 - setup the same way but did NOT cause issues. I verified that if you were using a ""normal"" tax schedule with 2 codes, that did not cause an issue, either. So something about the two ""hard coded"" tax codes that caused a boo-boo.