It's been an ongoing issue since this new dashboard came out. It baffles me, as the girlfriends Xbox, which is located on the opposite side of the wall my Xbox is located, hasn't been having these issues.
It's a very fickle thing. Seems like my Xbox will connect and disconnect when ever it feels like it, and sometimes it absolutely refuses to connect to Xbox Live at all, while still being able to connect to my home network, and the internet.
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