Problems with downloading iOS6?

I have an iPhone 4 and it gave me the option to download updated software so I did. And I've always had my email as my apple ID. And I went to download the YouTube app again and my moms apple ID email pops up for me to put the password in to download the app. And in my settings, it's set as my email. Anything reason why? Or how I can fix it?

Its not a big issue
You need to change the setting in settings app.
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