We purchased this game two days ago, we purchased our new Windows XP pc a month ago. Never had a problem with Harry Potter and the Sorcerer's Stone with the new computer. However, The Prisoner of Azkaban continually freezes our computer. My six year old was in tears he was so frustrated with the freezing (not to mention the parents). Please, does anyone know why this is happening? And how to fix this problem? I am at a loss. I would appreciate any assistance. Thank you.