Ive had my 360 since launch day and its only done this once before. My fans have sped up to feel speed on system turn on. now there is no reason this should b hapining because its only turned on. The first time this happen i put it horizontal for a couple minutes the fans instantly died down and i returned it to vertical. Now i went away for the weekend and when i came back it did the same thign except this time putting it horizontal hasent odne anything, even moving it to a place where nothing surrounds it (in the middle of my room) has odne nothing. What should i do?