Hi, I've searched a lot about MacBook (not Pro) overheating. I found some cooling pads, but i'm not certain if I need it. So, my question is: from which temperature should I start to get anxious? I have: around 40 C (104 F) for my HD around 50 C (122 F) for my CPU around 70 C (158 F) for my Airport card and some other components around 50 C (122 F) I use iStat to find those temeratures. Thank you for your answers.