I bought myself a 4G ASUS EEE PC701 10 days ago and am very pleased with it. However, it gets alarmingly warm after about 30 minutes - and yesterday started making a strange whining sound at the same time (rather like a fan, though I can't believe there is enough room for one inside the incredibly small case!). Does anyone know if it's normal for these machines to get so hot, or do I need to take it back?