We have an Animas Ping and we're having trouble with the combo boluses. We almost always use combo boluses and last April we noticed that the IOB didn't seem correct when using a combo bolus. I called Animas and they immediately replaced the pump. All seemed good for a few months, then we noticed the IOB again didn't seem right. Called Animas again and they sent out yet another pump. We got the pump yesterday and today with both pumps in hand, did the exact same combo bolus and now when it's finished one pump says IOB=0.22 and the other says IOB= 0.02. For us that's a big difference considering 0.2 units of insulin with theoretically bring down his bg 70 mg/dl. We've double and triple checked that the settings are the same and both pumps. We're on hold with Animas again, does anyone have any suggestions about who else to contact to help get this resolved? Anyone else notice anything like this? I now have no confidence in these pumps as now the "old" one now seems to be doing it right and the "new" one is not.