just normal game play.
I agree I can't see any reasoning for it either but it just seems weird that after changing the date I haven't had a problem. It could just be coincidence I suppose but its probably played at least 6/8 hours without freezing now.
The only other thing is that the guy asked me to play a DVD on it which we did no problem

so since I have altered the clock and played a DVD no issues!
just don't know whether to send it back or not now??