HELP Hii, i have a problem with my ps3. I play for like 15 mins then the picture just holds still and i try to use my joistick but nothing works. it just stands still so the only thing i have to do is shut it down from the main switch at the back. Then i open it again and it wont read the CD, when a CD is inside. Then i come back the next day and it works again, while playing AGAiN the same problem after 15 mins it just stops and the screen hold still. What do you think i should do and what do you think is the problem ?! Thank You for your help.