VAIO NR110E overheating

All right, I bought this laptop back in january and I keep having problems with it, I don't know if I'm the only one... I *think* it's overheating, I downloaded Speedfan to monitor its temperature and under normal use (wi-fi on, chatting on messenger and listening to music with iTunes, CPU usage goes between 5 and 10%) the temperature of the cores is at 55/56°C. Now, the damn thing will just freeze every now and then and I can feel through the side vent that the temperature inside is higher than it is right now (at 55)... Anybody else got this problem? I should have seen it coming, considering this model doesn't have a fan -_-

 

It just happened again, upon restart (because I forgot to open speedfan before) the temperature reading was at 54C, that's after a reboot... I activated the log feature so I'll have some records to look at...


edit: any upgrades to the heatsink that can be done?

 

Ok, I don't get much feedback, but I just left my computer for maybe 30 minutes, during which it did... well... nothing really, and from my logs the temperature went as high as 60 degrees, when I came back it had rebooted on its own (which never happened before...), guess it will have to go to the technician for a while... Problem is they don't believe it's a hardware problem, damn...