Well I have been just noticing lately that while playing my Xbox 360 every once and awhile my Xbox 360 will just freeze completely, This does not happen constantly but like once or twice every few days. I am getting a little worried seeing as it may be a sign of RROD in the future but if it is signs of RROD I am very angry because my Xbox is a 08 model and I have only had it for around 3 months. I take care of my Xbox 360 and always let it cool down for 15 minutes if I play for more than 4 hours straight. I don't think it is a disc problem seeing as it happend whilst playing Fallout 3 which was right out of the case brand new. The game also became a little jittery for a few seconds in Fallout 3 but went back to normal quickly.