Support Popup browser using data when closed?

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http://androidforums.com – I checked my data usage today and found that today the popup browser used 0mb of foreground data but 5.56mb of background data. This is the only time I've seen this happen. It might have something to do with a problem I was curious about where youtube videos don't load sometimes in the popup browser. They normally do but sometimes they just buffer forever and every video will do it. But if it's buffering and I press the "x" at the top right it should end, right? I would post a screenshot but this is my first post and I'm not allowed. Edit: I was thinking, "Maybe I did (General)