Sorry I wasn't clear but not really sure how it happened. I will try to explain how I think it may have happened. My husband (DH) and I both have accts on our desktop iMac. I was the first iPhone owner in household. I think, as he was trying to be nice and helpful, I think he synch'd my iPhone under his iMac acct instead of under my iMac acct. I started noticing shortly after that, that when I tried to install one/some of my iPhone apps that his apple id would occasional show up at password stage of doing an iPhone app update. It seems his apple id would show up when I attempted the 'update all' feature.
Yesterday, I moved to mobile iOS 6, so now I'd like to update all my apps. When trying to 'update all' I continue to get his apple id. A couple of them I've updated singularly and don't seem to always encounter that problem. So before posting, we went thru each of the apps available for update and I deleted off the apps that more than likely may have been tied to him (things like banking apps, etc). There are may be a few apps that we both have like around me, but really not many since we use iPhone for different purposes.
I'm the 'old and dumb' type user now and the frustration of fixing/resolving problems is great, so I haven't synch'd my iPhone since nor my ipad2 at all to the iMac. I hope someone can help me unravel this. Thanks.