Ok, Thanks, I'll try the restore on his PS3 later tonight and see if that helps, Ill get back to you with results. funny thing is his place is very clean/fairly dust free compared to mine! He keeps his games very well too so dont really know how his laser could have got dirty in such a short amount of time.
both his PS3s were from same shop and they were both the orange Killzone 2 pack model, I suspected a dodgy batch at first as the first one died in 11month, then 3 months, he did play an awful lot of MW2 though, I also suspected this to be a laser killer but it could just be the ridiculas amount of time spent playint it!!